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共用题干
第三篇

Scientists Make Sweet Discovery

Good news for chocoholics:the treat preferred by millions all over the world is good for you,according
to American researchers at the University of California. Chocolate contains substances called flavonoids（类黄
酮)that can help maintain a healthy heart and good circulation.The researchers have discovered that cocoa
acts like aspirin and that eating a bar of chocolate once in a while may contribute to a healthy diet. Chocolate
has also been shown to release endorphins（内啡肽) in the body: these chemicals help to reduce pain and
stress and make you feel happy.
But who first discovered this wonderful way of keeping healthy?The Olmec Indians of Mexico and Central
America were the first to grow cocoa beans,in about 1500 BC,and the Mayas were drinking unsweetened
cocoa hundreds of years before it became fashionable in Europe.The word chocolate comes from the Nahuatl
word xocolati,which means"bitter water".
In 1544,a delegation of Mayan nobles visited Philip of Spain and gave him jars of cocoa as a gift. Cocoa
soon became fashionable in Spain and Portugal.The Spanish were the first to add sugar to their cocoa drink.
In the 17th century,chocolate was becoming fashionable with the middle-classes,not only as a drink but also
as a medicine.
By the middle of the century,solid chocolate was becoming familiar. In 1753,a Swedish scientist re-
named cocoa theobroma or" food for the gods".In 1765,James Baker and John Hanan opened the first choco-
late mill in the United States,introducing chocolate to the average citizen.In 1876,in Switzerland,Daniel
Peter had the idea of adding milk in the chocolate,making process and produced the first milk chocolate.
Since then,chocolate has grown enormously in popularity. One of the biggest chocolate-eating nations is
Britain where the average man,woman,and child eats nine kilos of chocolate a year!In fact,chocolate is the
number one comfort food and there are more"chocoholics"in Britain than anywhere else in the world.Re-
searchers warn that although chocolate is good for you,it should be eaten in small quantities and with no
added milk.

When cocoa was first introduced to Europe__________,it soon became fashionable.
A:as a drink
B:as a gift
C:as food
D:as a medicine

参考答案

参考解析
解析：第一段第二句提到：巧克力中含有一种叫类黄酮的物质，它能维护心脏的健康并保持 血液循环畅通。
第三段第一句提到：1544年，一个玛雅贵族代表团勤见西班牙国王菲利普时送给他几 罐可可粉作为礼物。
第四段第二句提到：1765年，James Baker和John Hanan在美国开办了第一个巧克力作 坊，将巧克力介绍给了普通人。
短文最后一句提到：研究者劝告我们，虽然巧克力对我们有好处，但应该少量食用而且 不应另加奶。
从题目和总体内容可见，这篇短文说明了吃巧克力的好处，虽然后面提出吃巧克力时 的注意事项，但这不影响作者肯定的语气。
更多 “共用题干 第三篇Scientists Make Sweet DiscoveryGood news for chocoholics:the treat preferred by millions all over the world is good for you,according to American researchers at the University of California. Chocolate contains substances called flavonoids（类黄 酮)that can help maintain a healthy heart and good circulation.The researchers have discovered that cocoa acts like aspirin and that eating a bar of chocolate once in a while may contribute to a healthy diet. Chocolate has also been shown to release endorphins（内啡肽) in the body: these chemicals help to reduce pain andstress and make you feel happy.But who first discovered this wonderful way of keeping healthy?The Olmec Indians of Mexico and CentralAmerica were the first to grow cocoa beans,in about 1500 BC,and the Mayas were drinking unsweetened cocoa hundreds of years before it became fashionable in Europe.The word chocolate comes from the Nahuatl word xocolati,which means"bitter water".In 1544,a delegation of Mayan nobles visited Philip of Spain and gave him jars of cocoa as a gift. Cocoa soon became fashionable in Spain and Portugal.The Spanish were the first to add sugar to their cocoa drink. In the 17th century,chocolate was becoming fashionable with the middle-classes,not only as a drink but also as a medicine.By the middle of the century,solid chocolate was becoming familiar. In 1753,a Swedish scientist re- named cocoa theobroma or" food for the gods".In 1765,James Baker and John Hanan opened the first choco- late mill in the United States,introducing chocolate to the average citizen.In 1876,in Switzerland,Daniel Peter had the idea of adding milk in the chocolate,making process and produced the first milk chocolate.Since then,chocolate has grown enormously in popularity. One of the biggest chocolate-eating nations isBritain where the average man,woman,and child eats nine kilos of chocolate a year!In fact,chocolate is the number one comfort food and there are more"chocoholics"in Britain than anywhere else in the world.Re- searchers warn that although chocolate is good for you,it should be eaten in small quantities and with noadded milk.When cocoa was first introduced to Europe__________,it soon became fashionable.A:as a drinkB:as a giftC:as foodD:as a medicine” 相关考题
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考题 共用题干 第三篇Scientists Make Sweet DiscoveryGood news for chocoholics:the treat preferred by millions all over the world is good for you,according to American researchers at the University of California. Chocolate contains substances called flavonoids（类黄 酮)that can help maintain a healthy heart and good circulation.The researchers have discovered that cocoa acts like aspirin and that eating a bar of chocolate once in a while may contribute to a healthy diet. Chocolate has also been shown to release endorphins（内啡肽) in the body: these chemicals help to reduce pain andstress and make you feel happy.But who first discovered this wonderful way of keeping healthy?The Olmec Indians of Mexico and CentralAmerica were the first to grow cocoa beans,in about 1500 BC,and the Mayas were drinking unsweetened cocoa hundreds of years before it became fashionable in Europe.The word chocolate comes from the Nahuatl word xocolati,which means"bitter water".In 1544,a delegation of Mayan nobles visited Philip of Spain and gave him jars of cocoa as a gift. Cocoa soon became fashionable in Spain and Portugal.The Spanish were the first to add sugar to their cocoa drink. In the 17th century,chocolate was becoming fashionable with the middle-classes,not only as a drink but also as a medicine.By the middle of the century,solid chocolate was becoming familiar. In 1753,a Swedish scientist re- named cocoa theobroma or" food for the gods".In 1765,James Baker and John Hanan opened the first choco- late mill in the United States,introducing chocolate to the average citizen.In 1876,in Switzerland,Daniel Peter had the idea of adding milk in the chocolate,making process and produced the first milk chocolate.Since then,chocolate has grown enormously in popularity. One of the biggest chocolate-eating nations isBritain where the average man,woman,and child eats nine kilos of chocolate a year!In fact,chocolate is the number one comfort food and there are more"chocoholics"in Britain than anywhere else in the world.Re- searchers warn that although chocolate is good for you,it should be eaten in small quantities and with noadded milk.Which of the following statements is NOT true according to the passage? A:Chocolate contains substances that make people feel happy.B:Chocolate is good for health if it is eaten with added milk.C:Eating chocolate occasionally contributes to a healthy diet.D:Chocolate is loved by millions of people worldwide.
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考题 共用题干 第三篇Scientists Make Sweet DiscoveryGood news for chocoholics:the treat preferred by millions all over the world is good for you,according to American researchers at the University of California. Chocolate contains substances called flavonoids（类黄 酮)that can help maintain a healthy heart and good circulation.The researchers have discovered that cocoa acts like aspirin and that eating a bar of chocolate once in a while may contribute to a healthy diet. Chocolate has also been shown to release endorphins（内啡肽) in the body: these chemicals help to reduce pain andstress and make you feel happy.But who first discovered this wonderful way of keeping healthy?The Olmec Indians of Mexico and CentralAmerica were the first to grow cocoa beans,in about 1500 BC,and the Mayas were drinking unsweetened cocoa hundreds of years before it became fashionable in Europe.The word chocolate comes from the Nahuatl word xocolati,which means"bitter water".In 1544,a delegation of Mayan nobles visited Philip of Spain and gave him jars of cocoa as a gift. Cocoa soon became fashionable in Spain and Portugal.The Spanish were the first to add sugar to their cocoa drink. In the 17th century,chocolate was becoming fashionable with the middle-classes,not only as a drink but also as a medicine.By the middle of the century,solid chocolate was becoming familiar. In 1753,a Swedish scientist re- named cocoa theobroma or" food for the gods".In 1765,James Baker and John Hanan opened the first choco- late mill in the United States,introducing chocolate to the average citizen.In 1876,in Switzerland,Daniel Peter had the idea of adding milk in the chocolate,making process and produced the first milk chocolate.Since then,chocolate has grown enormously in popularity. One of the biggest chocolate-eating nations isBritain where the average man,woman,and child eats nine kilos of chocolate a year!In fact,chocolate is the number one comfort food and there are more"chocoholics"in Britain than anywhere else in the world.Re- searchers warn that although chocolate is good for you,it should be eaten in small quantities and with noadded milk.What is the author's tone about eating chocolate?A:Ambiguous. B:Negative.C:Positive. D:Humorous.
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考题 共用题干 New Foods and the New WorldIn the last 500 years,nothing about people—not their clothes,ideas,or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree by South American Indians .The Spanish introduced it to the rest of the world during the 1500's .And although it was very expensive,it quickly became fashionable.In London,shops where chocolate drinks were served became important meeting places. Some still exist today.The potato is also from the New World. Around 1600,the Spanish brought it from Peru to Europe,where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the“Potato Famine”of 1845—1846,and thou- sands more were forced to emigrate to America.There are many other foods that have traveled from South America to the Old World. But some others went in the opposite direction. Brazil is now the world's largest grower of coffee,and coffee is an important crop in Colombia and other South American countries.But it is native to Ethiopia. It was first made into a drink by Arabs during the 1400's.According to an Arabic legend,coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush.He tried one and experienced the “wide-awake”feeling that one-third of the world's population now starts the day with. According to the passage,which of the following has changed the most in the last 500 years?A: Food.B: Chocolate.C:Potato.D: Coffee.
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考题 共用题干 第一篇Graphene' s SuperstrengthBig technology comes in tiny packages.New ccii phones and personal computers get snialler every year, which means these electronics require even smaller components on the inside.Engineer; are looking for creative ways to build these components,and they'ye turned their eyes to graphene,a superthin material, made of carbon,that could change the future of electronics.This year's Nobel Prize for Physics has been awarded to Andre Geim and Kostya Novoselov from the University of Manchester,U.K.for the discovery of graphene.Graphdne isn't just small;it's "the thinnest possible material in this world"says Novosclov.iJe calls it a “wonder material".It’s so thin that you would need to stack about 25,000 sheets just to make a pile as thick as a piece of' ordinary white paper. If you were to hold a sheet of graphene in your fingers,you'ci have no idea because you wouldn't be able to see it.Carbon is one of the most abundant elements in the universe.Every known kind of life contains carbon. Graphene is a sheet of earboti,but only one atom thick.You don't have to look far to find graphene一it's all around you.If you want this high-tech wonder stuff,all you need is a pencil,paper and a little adhesive tape.Use the pencil to shade a small area on the paper,and then apply a small piece of adhesive tape over the area. When you pull up the tape,you'll see that it pulls up a thin layer of some of the shading from your pencil. That layer is called graphite,one of the softest mninerals in the world.Now stick the same piece of tape on another sheet of paper and pull the tape up一there should be an even thinner layer,this time left on the paper. Now imagine that you do this over and over,until you get the thinnest possible layer of material on the paper. This layer would he only one atom thick,and you wouldn't be able to see it. Graphite is made of layers of graphene.So when you get to the thinnest possible layer, you've found graphene.Which of the following statements about graphene is true?A:It is visible to the human eye.B:It is possibly the thinnest material in the world.C:It can he used to make paper.D:Finding it demands time and money.
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考题 共用题干 第二篇Citizen ScientistsUnderstanding how nature responds to climate change will require monitoring key life cycle events一flowering,the appearance of leaves,the first frog calls of the spring一all around the world.But ecologists （生态学家）can' t be everywhere so they' re turning to non-scientists, sometimes called citizen scientists,for help.Climate scientists are not present everywhere.Because there are so many places in the world and not enough scientists to observe all of them,they're asking for your help in observing signs of c1imat。 ehang, across the world.The citizen scientist movement encourages ordinary people to observe "very specificresearch interest一birds,trees,flowers budding,etc. and send their observations to a giant database （数据库）to be observed by professional scientists. This helps a small number of scientists track a large amount of data that they would never be able to gather on their own.Much like citizen journalists helping large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.All that's needed to become one is a few minutes each day or each week to gather data and send it in.A group of scientists and educators launched an organization last year called the National Phonology Network."Phenology"is what scientists eni1 the study of the timing of events in nature.One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant flowering and leafing every year. The program,called Project BudBurst,collects life eyele data on a variety of common plants from across the United States.People participating in the project一which is open to every- one一record their observations on the Project BudBurst website."People don't have to be plant experts一they just have to look around and see what's in their neighborhood,"says Jennifer Schwartz,an education consultant with the project."As we collect this data, we'll be able to make an estimate of how p'ants and communities（生物群落）of plants and animals will re- spond as the climate changes."Ecologists turn to non-scientist citizens for help because they need them________________.A:to provide their personal life cyclesB:to observe the life cycle of plantsC:to collect data of the life cycle of living thingsD:to teach children knowledge about climate change
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考题 共用题干 第二篇Citizen ScientistsUnderstanding how nature responds to climate change will require monitoring key life cycle events一flowering,the appearance of leaves,the first frog calls of the spring一all around the world.But ecologists （生态学家）can' t be everywhere so they' re turning to non-scientists, sometimes called citizen scientists,for help.Climate scientists are not present everywhere.Because there are so many places in the world and not enough scientists to observe all of them,they're asking for your help in observing signs of c1imat。 ehang, across the world.The citizen scientist movement encourages ordinary people to observe "very specificresearch interest一birds,trees,flowers budding,etc. and send their observations to a giant database （数据库）to be observed by professional scientists. This helps a small number of scientists track a large amount of data that they would never be able to gather on their own.Much like citizen journalists helping large publications cover a hyper-local beat,citizen scientists are ready for the conditions where they live.All that's needed to become one is a few minutes each day or each week to gather data and send it in.A group of scientists and educators launched an organization last year called the National Phonology Network."Phenology"is what scientists eni1 the study of the timing of events in nature.One of the group's first efforts relies on scientists and non-scientists alike to collect data about plant flowering and leafing every year. The program,called Project BudBurst,collects life eyele data on a variety of common plants from across the United States.People participating in the project一which is open to every- one一record their observations on the Project BudBurst website."People don't have to be plant experts一they just have to look around and see what's in their neighborhood,"says Jennifer Schwartz,an education consultant with the project."As we collect this data, we'll be able to make an estimate of how p'ants and communities（生物群落）of plants and animals will re- spond as the climate changes."In"All that's needed to become one…（Paragraph 2)",what does the word"one"stands for?A:A citizen journalist.B:A citizen scientist.C:A 5cientist.D:A citizen.
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考题 共用题干 第一篇Graphene' s SuperstrengthBig technology comes in tiny packages.New ccii phones and personal computers get snialler every year, which means these electronics require even smaller components on the inside.Engineer; are looking for creative ways to build these components,and they'ye turned their eyes to graphene,a superthin material, made of carbon,that could change the future of electronics.This year's Nobel Prize for Physics has been awarded to Andre Geim and Kostya Novoselov from the University of Manchester,U.K.for the discovery of graphene.Graphdne isn't just small;it's "the thinnest possible material in this world"says Novosclov.iJe calls it a “wonder material".It’s so thin that you would need to stack about 25,000 sheets just to make a pile as thick as a piece of' ordinary white paper. If you were to hold a sheet of graphene in your fingers,you'ci have no idea because you wouldn't be able to see it.Carbon is one of the most abundant elements in the universe.Every known kind of life contains carbon. Graphene is a sheet of earboti,but only one atom thick.You don't have to look far to find graphene一it's all around you.If you want this high-tech wonder stuff,all you need is a pencil,paper and a little adhesive tape.Use the pencil to shade a small area on the paper,and then apply a small piece of adhesive tape over the area. When you pull up the tape,you'll see that it pulls up a thin layer of some of the shading from your pencil. That layer is called graphite,one of the softest mninerals in the world.Now stick the same piece of tape on another sheet of paper and pull the tape up一there should be an even thinner layer,this time left on the paper. Now imagine that you do this over and over,until you get the thinnest possible layer of material on the paper. This layer would he only one atom thick,and you wouldn't be able to see it. Graphite is made of layers of graphene.So when you get to the thinnest possible layer, you've found graphene.The word "apply" in Paragraph 4 could be replaced by________.A:pushB:findC:collectD:put
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考题 共用题干 第一篇Graphene' s SuperstrengthBig technology comes in tiny packages.New ccii phones and personal computers get snialler every year, which means these electronics require even smaller components on the inside.Engineer; are looking for creative ways to build these components,and they'ye turned their eyes to graphene,a superthin material, made of carbon,that could change the future of electronics.This year's Nobel Prize for Physics has been awarded to Andre Geim and Kostya Novoselov from the University of Manchester,U.K.for the discovery of graphene.Graphdne isn't just small;it's "the thinnest possible material in this world"says Novosclov.iJe calls it a “wonder material".It’s so thin that you would need to stack about 25,000 sheets just to make a pile as thick as a piece of' ordinary white paper. If you were to hold a sheet of graphene in your fingers,you'ci have no idea because you wouldn't be able to see it.Carbon is one of the most abundant elements in the universe.Every known kind of life contains carbon. Graphene is a sheet of earboti,but only one atom thick.You don't have to look far to find graphene一it's all around you.If you want this high-tech wonder stuff,all you need is a pencil,paper and a little adhesive tape.Use the pencil to shade a small area on the paper,and then apply a small piece of adhesive tape over the area. When you pull up the tape,you'll see that it pulls up a thin layer of some of the shading from your pencil. That layer is called graphite,one of the softest mninerals in the world.Now stick the same piece of tape on another sheet of paper and pull the tape up一there should be an even thinner layer,this time left on the paper. Now imagine that you do this over and over,until you get the thinnest possible layer of material on the paper. This layer would he only one atom thick,and you wouldn't be able to see it. Graphite is made of layers of graphene.So when you get to the thinnest possible layer, you've found graphene.What would change the future of electronics according to engineers?A:Personal computer.B:Big technology.C:Graphonc.D:Creative ways.
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考题 共用题干 Rising Tuition in the USEvery spring,US university administrators gather to discuss the next academic year's budget.They consider faculty salaries,utility costs for dormitories,new building needs and repairs to old ones .They run the numbers and conclude-it seems,inevitably-that,yet again,the cost of tuition must go up.According to the US's College Board,the price of attending a four-year private university in the US rose 81 percent between 1993 and 2004.______(46)In 2005 and 2006,the numbers continued to rise.According to university officials,college cost increases are simply the result of balancing uni-versity checkbooks.“Tuition increases at Cedarville University are determined by our revenue needs for each year.”said the university's president,Dr. Bill Brown.“Student tuition pays for 78 percent of the university's operating costs.”Brown's school is a private university that enrolls about 3,100 undergrads and is consistently recognized by annual college ranking guides like US News and World Report's and The Princeton Review's.______(47)Tuition at private universities is set by administration officials and then sent for approval to the school's board of trustees (董事）.______( 48 ) This board oversees（监管）all of a state's public institutions.John Durham,assistant secretary to the board of trustees at East Carolina University(ECU), explains that state law says that public institutions must make their services available whenever possible to the people of the state for free.Durham said that North Carolina residents only pay 22 percent of the cost of their education.______(49)State residents attending ECU pay about US $10,000 for tuition,room and board before financial aid.Amid the news about continued increases in college costs,however,there is some good news. Tuition increases have been accompanied by roughly equal increases in financial aid at almost ev-ery university.To receive financial aid,US students complete a formal application with the federal government. The federal government then decides whether an applicant is eligible（有资格的）for grants or loans______(50)______(47)A: The application is then sent to the student's university,where the school itself will decide whether free money will be given to the student and how much.B: At public universities,however,tuition increases must also be approved by a state edu-cation committee,sometimes called the board of governors.C: The school currently charges US$23,410 a year for tuition.D: Many American people are simply unable to pay the growing cost of food.E: That's more than double the rate of inflation.F: The state government covers the rest.
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考题 单选题Millions of American soldiers fought _____ in the World War II.A externallyB aboardC broadlyD overseas
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考题 单选题The news _____ he had landed on the moon spread all over the world.A whichB thatC whatD as
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考题 单选题At the G20 meeting, many good ideas ______ on how to fight against pollution all over the world.A set upB put upC picked upD came up
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考题 问答题Practice 4　　The line of demarcation between the adult and the child world is drawn in many ways. For instance, many American parents may be totally divorced from the church, or entertain grave doubts about the existence of God, but they send their children to Sunday school and help them to pray. American parents struggle in a competitive world where sheer cunning and falsehood are often rewarded and respected, but they feed their children with nursery tales in which the morally good is pitted against the bad, and in the end the good inevitably is successful and the bad inevitably punished. When American parents are in serious domestic trouble, they maintain a front of sweetness and light before their children. Even if American parents suffer a major business or personal catastrophe, they feel obliged to turn to their children and say, “Honey, everything is going to be all right.” This American desire to keep the children’ s world separate from that of the adult is exemplified also by the practice of delaying transmission of the news to children when their parents have been killed in an accident. Thus, in summary, American parents face a world of reality while many of their children live in a near-ideal unreal realm where the rules of the parental world do not apply, are watered down, or are even reversed.
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