The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name.But Gregory Cochran is 1 to say it anyway.He is that 2 bird,a scientist who works independently 3 any institution.He helped popularize the idea that some diseases not 4 thought to have a bacterial cause were actually infections,which aroused much controversy when it was first suggested.5 he,however,might tremble at the 6 of what he is about to do.Together with another two scientists,he is publishing a paper which not only 7 that one group of humanity is more intelligent than the others,but explains the process that has brought this about.The group in 8 are a particular people originated from central Europe.The process is natural selection.This group generally do well in IQ test,9 12-15 points above the 10 value of 100,and have contributed 11 to the intellectual and cultural life of the West,as the 12 of their elites,including several world-renowned scientists,13.They also suffer more often than most people from a number of nasty genetic diseases,such as breast cancer.These facts,14,have previously been thought unrelated.The former has been 15 to social effects,such as a strong tradition of 16 education.The latter was seen as a（an）17 of genetic isolation.Dr.Cochran suggests that the intelligence and diseases are intimately 18.His argument is that the unusual history of these people has 19 them to unique evolutionary pressures that have resulted in this 20 state of affairs.8选？
A.progress
B.fact
C.need
D.question

Being fat doesn’t necessarily mean you're unhealthy,according to a new study.Researchers at York University in Toronto found that obesity 1 doesnt increase your risk for mortality 2 it's 3 another metabolic risk factor,such as high blood sugar or high levels of bad cholesterol This is 4 most of the literature,Jennifer Kuk,a（n）5 professor of kinesiology at York University,writes in a press 6.She says 7,most studies defined"healthy"obesity 8 having up to one metabolic risk factor--which is an issue,9 conditions like high blood sugar and bad cholesterol increase mortality risk for anyone,skinny or fat.This is likely 10 most studies have reported that healthy'obesity is still 11 higher mortality risk,she says.The study looked at data of 54,089 men and women from five large studies,and 12 them into two groups:those who were obese and had no metabolic risk factors,and those who were obese and had metabolic 13 such as elevated glucose,blood pressure or lipids Researchers then looked at how many people in each group died,and 14 their numbers to the death rate for 15-weight folks who had no metabolic risk factors We found that a person of normal weight 16 no other metabolic nsk factors is Just as likely to die as the person with obesity and no other risk factors,"Kuk says.according to their 17 individuals with metabolically healthy obesity are actually not at an elevated mortality 18 This means that hundreds of thousands of people in North America with metabolically healthy obe sity will be told to lose weight when it's 19 how much benefit they'll actually 20 she concludes
6选？
A.conference
B.message
C.agency
D.release

Growing bodies need movement and（ ）,but not just in ways that emphasize competition.
A.care
B.nutrition
C.exercise
D.leisure

“There is one and only one social responsibility of business,”wrote Milton Friedman,a Nobel prize-winning economist“That is,to use its resources and engage in activities designed to increase its profits.”But even if you accept Fiedman’s premise and regard corporate social responsibility（CSR）policies as a waste of shareholders money,things may not be absolutely clear-cut.New research suggests that CSR may create monetary value for companies–at least when they are prosecuted for corruption.The largest firms is America and Britain together spend more than$15 billion a year on CSR,according to an estimate by EPG,a consulting firm,This could add value to their businesses in three ways.First,consumers may take CSR spending as a“signal”that a company’s products are of high quality.Second,customers may be willing to buy a company’s products as an indirect way to donate to the good causes is helps.And third,through a more diffuse“halo effect,”whereby its good deeds earn it greater consideration from consumers and others.Previous studies on CSR have had trouble differentiating these effects because consumers can be affected by all three.A recent study attempts to separate them by looking at bribery prosecutions under America’s Foreign Corrupt Practices Act（FCPA）.It argues that since prosecutors do not consume a company's products as part of their investigations,they could be influenced only by the halo effect.The study found that,among prosecuted firms,those with the most comprehensiveCSR programmes tendedto getmore lenient penalties.Their analysis ruled out the possibility that it was firms'political influence,rather than their CSR stand,that accounted for the leniency:Companies that contributed more to political campaigns did not receive lower fines.In all,the study concludes that whereas prosecutors should only evaluate a case based on its merits,they do seen to influenced by a company’s record in CSR."We estimate that either eliminating a substantial labour-rights concern,such as child labour,or increasing corporate giving by about 20%results in fines that generally are 40%lower than the typical punishment for bribing foreign officials,"says one researcher.Researchers admit that their study does not answer the question of how much businesses ought to spend on CSR.Nor does it reveal how much companies are banking on the halo effect,rather than the other possible benefits,when they decide their do-gooding policies.But at least have demonstrated that whencompanies get into trouble with the law,evidence of good character can win In all,the study concludes that whereas prosecutors should only evaluate a case based on its merits,they do seen to influenced by a company’s record in CSR."We estimate that either eliminating a substantial labour-rights concern,such as child labour,or increasing corporate giving by about 20%results in fines that generally are 40%lower than the typical punishment for bribing foreign officials,"says one researcher.Researchers admit that their study does not answer the question of how much businesses ought to spend on CSR.Nor does it reveal how much companies are banking on the halo effect,rather than the other possible benefits,when they decide their do-gooding policies.But at least have demonstrated that whencompanies get into trouble with the law,evidence of good character can win them a less costly punishment.
Theexpression"more lenient"（Line 2,Para.4）is closestin meaning to.
A.more effective.
B.less controversial.
C.less severe.
D.more lasting.

On trade,President Donald Trump has launched lots of investigations,withdrawn from one deal and started the renegotiation of another.But this week is the first time he has put up a big new barrier On January 22nd he approved broad and punitive duties,of up to 30%on imports of solar panels and up to 50%on imports of washing machines.His backers say that the measure,which affects aroundS 10bn of imports,will protect American workers.His critics cling to the hope that the damage will be mild.Both are wrong.Start with the claims made by the administration.Workers are also consumers,and Mr Trump's actions will whack them.Tariffs raise prices and dull competition.Whirlpool Corporation,the washing machine maker which asked for the duties,knows as much.When,n 2006,it merged with maytag,arival,it quelled concerns about its high market share by pointing to competition from abroad.One study found that clothes-dryer prices rose by 14%after the merger.For washing machines,where import competition was fiercer,prices were unchanged The solar industry is a clearer case.It has about 260,000 workers,a mere 2,000 of whom were making solar cells and panels at the end of 2016.The government reckons that the fastest-growing occupation over the next ten years will be that of solar installer.The Solar Energy Industries Association,a body that is enraged by the new tariffs,reckons that the industry will support up to 23,000 fewer jobs because of them.Meanwhile,as if to underline the irony,the two companies that asked for protection are unlikely to be saved And do not forget that the tariffs may harm American industry more broadly.Restricting markets for imports tends to spark retaliation that restricts markets for exports-especially when,as with these latest tariffs,they affect everyone.China,supposedly the focus of American ire,produces 60%of the world,solar cells and is responsible for 21%of America's imports.But South Korea will also be hit,and its government is poised to dispute America's action at the World Trade Organisation.Other casualties include Mexico,Canada and the European Union That Mr Trump has stayed within the rules is small comfort:they give him enormous scope to poison world trade.And it would be wrong to skate over the differences between his administration and its predecessors.The last time this particular safeguard was applied was in 2002.It is especially belligerent.Past presidents remained wary of hurting American consumers,and mindful of international repercussions.Mr.Trump,by contrast,seems to hold a steadfast belief that protectionism works.His rhetoric-and now his actions-invite aggrieved petitioners to apply for help.The logic of his stance on trade is to use tariffs not sparingly,but repeatedly and aggressively.Mr Trump is now open for business,just not the healthy sort
The case of Whirlpool Corporation mentioned in Paragraph 2 intends to
A.explain how and why workers suffer from Trump's policy
B.prove the benefits of raising tariffs to American public
C.highlight the importance of merges among corporations
D.illustrate the tactics used against the foreign competitors

Martin Luther King,the great Black leader in the movement against racial discrimination,was（ ）the Nobel Prize for peace for his outstanding contribution to world peace.
A.rewarded
B.awarded
C.conferred
D.granted