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单选题
Although some countries have taken action to solve the shortage of water，it may be sometime_____ the situation improves•
A
before
B
when
C
since
D
until
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更多 “单选题Although some countries have taken action to solve the shortage of water，it may be sometime_____ the situation improves•A beforeB whenC sinceD until” 相关考题
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The principal factor depressing life expectancy in developing countries has always been the high death rate for infants and children. The World Bank studies suggest that as much as two thirds of the difference in life-spans between people in developed countries and those in developing ones can be traced to differences in survival rates for children under five. It is here where the most improvement has come. According to UN estimates, significant regional drops in infant mortality - ranging from 25 percent to 60 percent and centering near 40 percent - appear to have taken place between the late 1950s and the late 1970s in northern Africa, Latin America, and Asia. Although sub-Saharan Africa' s mortality trends cannot be quantified with confidence, there is reason to believe that life expectancy has risen and infant mortality has declined in that region as well. There is little doubt that population growth has accelerated in sub-Saharan Africa since the 1950s; in fact, sub-Saharan Africa is widely thought to have the highest rate of population growth of any major region in the world. Only a small portion of that acceleration is likely to have been caused by increases in fertility (and increases in fertility, insofar as they have occurred, may also imply improvements in health and nutrition).Mortality, of course, is not a perfect measure of nutritional change. Improved nutrition is only one of a number of forces that have been pushing down death rates in developing countries. Others include the upgrading of hygiene and sanitation; the extension of public health services; medical innovations; improvements in education, communications, transportation, and, in some areas, civil order. Even so, the extent to which improvements innutrition—both direct and indirect—have reduced mortality in developing countries has frequently been underestimated. For example, Sri Lanka experienced an abrupt jump in life expectancy shortly after the Second World War. Whereas this was long described as a "technical fix"—a triumph of DDT over the anopheles mosquito—years later researchers realized that abrupt and rapid drops in mortality had also taken place in Sri Lanka' s highlands, or "dry zones", where malaria had never been a serious problem. In both highlands and lowland regions health improved in tandem with access to food.According to the author, life expectancy in developing countries is not high mainly because developing countries______.A．have a low standard of livingB．have no public health servicesC．have no public and private hygiene and sanitationD．have low survival rates for infants and children
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43． _________ scientists have done a lot of research on A (HINl) flu，there are still some cases for further study．A．AsB．OnceC．IfD．Although
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It is uncertain side effect the medicine will bring about, although about two thousand patients have taken it.A．thatB．whatC．howD．whether
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Which of the following statements is NOT mentioned in the passage?A. Malaria is under attack in a number of countries.B. Some types of mosquitoes have become resistant to the current sprays.C. New poisons have been put into wide use with the new science.D. One of human's challenges is to win the campaigns against mosquitoes.
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It's said that some measures have been taken _____ this problem.
A dealing with ;B to deal with ;C dealt with
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()you wish to know why we have placed no further orders with you recently, we are willing to raise a matter that caused us some trouble .A. sinceB. thoughC. asD. although
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听力原文：Although the said company is a sun-rising firm, its accounting management should be improved before the loan is extended to it.(9)A．The company is a sun-rising firm so it is worthwhile to extend the loan.B．The company has some accounting problems, some improvement is needed.C．The company is short of funds because it is sun-rising.D．The company has some accounting problems because it is sun-rising.
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It’s time we ____some measures to solve this problem.A、must takeB、will takeC、tookD、have taken
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Accordiiig to the passage, which of the following is NOT true? ( )A. Some Americans would not accept the value of conservation and environment protection, because this value would probably make them unemployed.B. Many Americans have been used to wasting, so it will be difficult for them to accept the new value of conservation.C. Some old values are still having a strong influence on American people, although they are harmful in this new age.D. Most Americans have fully realized the need to protect the environment, so they have taken measures to recycle junked goods.
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34 with Father’s Day around the corner, I have taken some money out of the bank—— presents for my dadA buyB.to buyC buyingD to have bought
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A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?A.Move the quadrantal spheres closer to the compassB.Raise the heeling magnet if the red end is upC.Remove some of the Flinders barD.Raise or lower the athwartship magnets
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You are testing the external inflation bladder on an immersion suit and find it has a very slow leak．Which action should be taken ________．A.Replace the suitB.Replace the inflation bladderC.Take it out of service and repair in accordance with the manufacturers instructionsD.Some leakage should be expected and a topping off tube is provided; no other action is necessary
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Recently，electric vehicles （EVs） have been claimed to provide a pathway for the transition towards sustainable transportation______EVs’ potential to solve energy and environmental problems，although new problems such as battery waste might appear.A.in behalf of
B.in honor of
C.in charge of
D.in view of
考题
资料：Even as rich countries seek to rid workplaces of subtle gender bias, in many developing ones discrimination remains overt. According to the World Bank, women are barred from certain jobs in 104 countries.（1）
“Gender equality in labour law is associated with more women working and earning more relative to men,” says Sarah Iqbal of the Bank. Yet some countries publish lists of jobs deemed too dangerous for women （Russia’s 456 include driving a train or steering a ship）. Others stop women from working in entire sectors, at night or in “morally inappropriate” jobs （in Kazakhstan women cannot bleed or stun cattle, pigs or small ruminants）. In four countries women cannot register a business. In 18 a husband can stop his wife working. A（2）
The aim is often to protect the “weaker sex”. Some laws put women in the same category as children; they concern jobs seen as physically tough, such as mining, construction and manufacturing. Others relate to broader safety fears. In Mumbai, for example, female shopkeepers cannot work as late as male ones. Other laws are intended to protect capacity to bear children. “Such policies often have demographic motivations, especially in countries with low birth rates,” says Ms Iqbal. （3）
Restrictions on night work originated in England during the Industrial Revolution. B In 1948 the International Labour Organisation （ILO） still sought to keep women away from mines and industrial nightwork. Spain did not lift restrictions on female workers in mining, electricity and some construction jobs until 1995. Some bans on women’s work still in place in former colonies are remnants of the 1960 Spanish Civil Code, the Napoleonic Code or Commonwealth laws. （4）
Some laws are of surprisingly recent origin: Vietnam’s ban on women driving tractors of 50 horsepower or more came into force in 2013. But on balance, the trend is towards liberalisation. In recent years Bulgaria, Kiribati and Poland have removed all restrictions; Colombia and Congo have got rid of some. Other countries have changed laws in light of technological advances that have made many jobs safer and less reliant on brute force, or have seen courts overturn bans as discriminatory. C（5）
Labour shortages are also leading to change. When many male miners left Marmato, in Colombia, to find better pay elsewhere, female replacements were tolerated, even though hiring them broke the law. Similarly, when male truckers in eastern European countries that joined the European Union left for western ones, pressure to let women replace them increased. And the end of a ban on women working nights in the Philippines in 2011 was cheered on by call-centres, which need staff during daytime in America and Europe. （6）
Some sex-specific restrictions are called for, says the ILO, particularly in the case of pregnant and breast-feeding women, for example when working with chemicals.（Such temporary and specific precautions are not counted in the World Bank’s study.） But, concludes the ILO, blanket protective prohibitions are “increasingly obsolete”. D（7）
Which statement is true about the restrictions on work?A.In developing countries, the gender discrimination in work field is spreading to more countries.
B.Due to work restrictions, women cannot work in some tough industries.
C.Women appreciate being treated as weaker sex in some countries so as to bear children.
D.Lifting restrictions on a list of dangerous jobs can help to solve the problem of inequality in work.
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Although some of these projects have been recently completed，the majority of projects will ______ in the fall of 2019.A.initiate
B.originate
C.manipulate
D.commence
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Some desirable changes have taken place in this town.A: identical
B: uncertain
C:.frequent
D: satisfactory
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Developed countries, like the US, have moved the some manufactures to the developing countries. Is it true or not? （）A、YesB、NotC、I don’t knowD、Not mentioned in this paragraph
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单选题What would happen to some countries if tourism stopped?A
Their economies would be ruined.B
It would keep their economies going.C
There would be no more environmental pollution there.D
People have no chance to travel there.
考题
单选题If you are the stand-on vessel in a crossing situation，you may take action to avoid collision by your maneuver alone. When may this action be taken?（）.A
At any time you feel it is appropriateB
Only when you have reached extremisC
When you determine that your present course will cross ahead of the other vesselD
When it becomes apparent to you that the give-way vessel is not taking appropriate action
考题
问答题Practice 5 You should spend about 40 minutes on this task. Write about the following topic: In some countries the average weight of people is increasing and their levels of health and fitness are decreasing. What do you think are the causes of these problems and what measures could be taken to solve them? Give reasons for your answer and include any relevant examples from your own knowledge or experience. Write at least 250 words.
考题
单选题A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment? （）A
Move the quadrantal spheres closer to the compassB
Raise the heeling magnet if the red end is upC
Remove some of the Flinders barD
Raise or lower the athwartship magnets
考题
单选题In your production database， data manipulation language （DML） operations are executed on theSALES table. You have noticed some dubious values in the SALES table during the last few days. Youare able to track users， actions taken， and the time of the action for this particular period but the changesin data are not tracked. You decide to keep track of both the old data and new data in the table along withthe user information. What action would you take to achieve this task（）A
Apply fine-grained auditing.B
Implement value-based auditing.C
Impose standard database auditing to auditobject privileges.D
Impose standard databaseauditing to audit SQL statements.
考题
单选题Although they entered the wildly profitable coffee business rather late, South American countries now produce most of the coffee consumed worldwide,A
South American countries now produceB
it is the South American countries now producingC
and South American countries now produceD
South American countries now producedE
South American countries would produce
考题
单选题Developed countries, like the US, have moved the some manufactures to the developing countries. Is it true or not? （）A
YesB
NotC
I don’t knowD
Not mentioned in this paragraph
考题
单选题Which measure have some countries not taken to deal with rising food prices?A
Imposing export restrictions.B
Seeking to control prices.C
Appealing to the WTO.
考题
单选题Some people think the railways are unnecessary because _____.A
motorcars and planes have taken the place of trainsB
the fee of taking trains is expensive todayC
railways don’t go in a straight lineD
railways earn a large amount of money
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