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练习16 (1) Actually, the world’s birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby death rate. (2) Unless population growth is reduced, the world population may reach 12 billion in a century. Is the earth capable of providing a good life for so large a population?
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已知学生记录描述为 struct student { int no； char name[20]； char sex； struct { int year； int month； int day； } birth； }； struct student s；变量s中的“生日”应是“1985年4月4日”，下列对“生日”的正确赋值方式是______。A．year=1985；month=4；day=4；B．birth.year=1985；birth.month=4；birth.day=4；C．s.year=1985；s.month=4；s.day=4；D．s.birth.year=1985；s.birth.month=4；s.birth,day=4；
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已知学生记录描述为：struct student{ int no;char name［20］,sex;struct{ int year,month,day;} birth;};struct student s;设变量s中的"生日"是"1984年11月12日"，对"birth"正确赋值的程序段是A．year=1984;month=11;day=12;B．s.year=1984;s.month=11;s.day=12;C．birth.year=1984;birth.month=11;birth.day=12;D．s.birth.year=1984;s.birth.month=11;s.birth.day=12;
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单句理解听力原文：Interest rate risk refers to the exposure of a bank's financial condition to adverse movements in interest rates.(1)A．Bank's financial condition is the cause of interest rate risk.B．Bank's financial condition has impact on interest rate risk.C．Interest rate risk occurs when interest rate moves against the bank's financial condition.D．Interest rate risk occurs when interest rate favours the bank's financial condition.
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In the 1970s among the developed countries, Britain maintained the lowest _____ rate and the highest _____ rate.
A.inflation, growthB.growth, inflationC.growth, divorceD.growth, birth
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Physicists from all over the world came to the U.S. to ______ the hundredth anniversary of Einstein’s birth.A、congratulateB、celebrateC、decorateD、participate
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In the 1920’s,but（ ）in the Depression conditions of the 1930’s,the United States experienced a declining birth rate—every thousand women aged fifteen to forty‐four gave birth to about 118 live children in1920，89.2 in 1930，75.8 in 1936,and 80 in 1940.A.extraordinary
B.specially
C.especially
D.specifically
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第二篇In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.Saudi Arabia is mentioned in the passage because it shows that________.A:the most important factor influencing birth rate is the economyB:factors other than the economy influence birth rateC:women who have a high income usually have few childrenD:the birth rate depends on per capita income
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第二篇In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.In a traditional agricultural economy,a large family_________.A:can be an advantageB:may limit incomeC:isn't necessaryD:is expensive
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第二篇In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.According to this passage,Italy today is an example of an__________.A:agricultural country with a high birth rateB:agricultural country with a low birth rateC:industrialized country with a low birth rateD:industrialized country with a high birth rate
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第二篇In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.When countries become industrialized,________.A:families often become largerB:the birth rate generally goes downC:women usually decide not to have a familyD:the population generally grows rapidly
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第二篇In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.In Mexico,Thailand,and Indonesia,the government________.A:is not concerned about the status of womenB:has tried to industrialize the. country rapidlyC:does not allow women to work outside the homeD:has tried to improve the condition of women
考题
In the 20th century the planet's population'doubled twice.It will not double even once in the 1 century,because birth rates in much of the world have 2 steeply.But the number of people over 65 is set to 3 within just 25 years.This shift in the structure of the population is not as momentous as the 4 that came before.But it is more than enough to reshape the world economy.5 the UN's population 6,the standard source for demographic estimates,there are around 600m people aged 65 0r older 7 today.That is in itself remarkable;the author Fred Pearce claims it is 8 that half of all the humans who have ever been over 65 are alive today.But 9 a share of the total population,at 8%,it is not that 10 to what it was a few decades ago.By 2035,11,more than l.1 billion people-13%of the population-will be above the age of 65.This is a 12 result of the dropping birth rates that are slowing overall population growth;they mean there are 13 fewer younS people around.The"old-age dependency ratio"-the ratio of old people to those of working age-will 14 even faster.In 2010 the world had 16 people aged 65 and over for every 100 aduILs between the ages of 25 and 64,15 the same raLio it had in 1980.By 2035 the UN 16 that number to have risen to 26.In rich countries it will be much higher.Japan will have 69 0ld people for every 100 0f working age by 2035,Germany 66.17 America,which has a relaLively high 18 rate,will see its old-age dependency rate rise by more than 70%,t0 44.Developing counLries,19 today's ratio is much lower,will not see absolute levels rise that high;20 the proportional growth will be higher.Over the same time period the old-age dependency rate in China will more than double from 15 t0 36.Latin America wiU see a shift from 14 to 27.19选？A.which
B.there
C.where
D.that
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第一篇Why So Many ChildrenIn many of the developing countries in Africa and Asia,the population is growing fast.The reason for this is simple.Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of their families?There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different.Many children do not help a family;instead,they are an ex- pense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War II,Italy's economy was rapidly modernized and industrialized. By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia,for exam- pie,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia,on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of women in Mexico,Thailand,and indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so.In countries where governments have made birth control easily available and inexpensive,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand, Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective program to reduce population growth does not have to de- pend on better economic conditions.When countries become industrialized,_________.A:the birth rate generally goes downB:families often become largerC:women usually decide not to have a familyD:the population generally grows rapidly
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第一篇Why So Many ChildrenIn many of the developing countries in Africa and Asia,the population is growing fast.The reason for this is simple.Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of their families?There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different.Many children do not help a family;instead,they are an ex- pense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War II,Italy's economy was rapidly modernized and industrialized. By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia,for exam- pie,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia,on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of women in Mexico,Thailand,and indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so.In countries where governments have made birth control easily available and inexpensive,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand, Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective program to reduce population growth does not have to de- pend on better economic conditions.Saudi Arabia is mentioned because it shows that_________.A:the most important factor influencing birth rate is the economyB:women who have a high income usually have few childrenC:the birth rate depends on per capita incomeD:factors other than the economy influence birth rate
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第一篇Why So Many ChildrenIn many of the developing countries in Africa and Asia,the population is growing fast.The reason for this is simple.Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of their families?There are several reasons for this.One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different.Many children do not help a family;instead,they are an ex- pense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War II,Italy's economy was rapidly modernized and industrialized. By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.However,the economy is not the only important factor that influences birth rate.Saudi Arabia,for exam- pie,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia,on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of women in Mexico,Thailand,and indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so.In countries where governments have made birth control easily available and inexpensive,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand, Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.These trends show that an effective program to reduce population growth does not have to de- pend on better economic conditions.italy today is an example of an_________.A:agricultural country with a high birth rateB:agricultural country with a low birth rateC:industrialized country with a low birth rateD:industrialized country with a high birth rate
考题
The population decreased from the 1840s until about 1970,largely because of（）.Aa low birth rateBa high death rateCa low employment rateDa high emigration rate
考题
The population decreased from the 1840s until about 1970,largely because of（）.A、a low birth rateB、a high death rateC、a low employment rateD、a high emigration rate
考题
设原字符串s为StringBuffer型，且s="Hellojava"，如果想用子串替换把s转换成"HelloWorld"，则正确的语句是（）A、s.replace（6，9，"World"）；B、s.replace（6，10，"World"）；C、s="World"；D、s=replace（"java"，"World"）；
考题
单选题English people _____.A
have never discussed who is the world’s greatest poet and greatest dramatistB
never discuss the world’s greatest poets and dramatistC
are sure who is the world’s greatest poet and greatest dramatistD
do not care who is the world’s greatest poet and greatest dramatist
考题
单选题Passage1 In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this. Onereason is economiIn atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrializeBy theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worlNevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth. Clearly,other factors are involveThemost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women. Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families. Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success. (495 words) According to this passage, Italy today is an example of an _______.A
agricultural country with a high birth rateB
agricultural country with a low birth rateC
industrialized country with a low birth rateD
industrialized country with a high birth rate
考题
问答题Practice 13 (1) Actually, the world’s birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby death rate. (2) Unless population growth is reduced, the world population may reach l2 billion in a century. Is the earth capable of providing a good life for so large a population?
考题
单选题The population decreased from the 1840s until about 1970,largely because of（）.A
a low birth rateB
a high death rateC
a low employment rateD
a high emigration rate
考题
单选题Passage1 In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this. Onereason is economiIn atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrializeBy theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worlNevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth. Clearly,other factors are involveThemost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women. Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families. Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success. (495 words) In a traditional agricultural economy, a large family_______.A
can be an advantageB
may limit incomeC
isn't necessaryD
is expensive
考题
单选题有如下定义：struct{ int num; char name[10]; struct { int y; int m; int d; }birth; }s,*ps=s;以下对内嵌结构体成员的引用形式错误的是（ ）。A
ps.birth.yB
s.birth.yC
ps-birth.yD
(*ps).birth.y
考题
单选题Passage1 In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this. Onereason is economiIn atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrializeBy theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worlNevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth. Clearly,other factors are involveThemost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women. Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families. Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success. (495 words) When countries become industrialized, _______.A
families often become largerB
the birth rate generally goes downC
women usually decide not have a familyD
the population generally grows rapidly
考题
单选题Passage1 In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this. Onereason is economiIn atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrializeBy theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worlNevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth. Clearly,other factors are involveThemost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women. Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families. Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success. (495 words) Saudi Arabia is mentioned in the passage because it shows that _______.A
the most important factor influencing birth rate is the economyB
factors other than the economy influence birth rateC
women who have a high income usually have few childrenD
the birth rate depends on per capita income
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