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发布时间:2024-06-30 04:52:44

[不定项选择题]共用题干 第二篇

The American Industry

A history of long and effortless success can be a dreadful handicap,but if properly handled,it may become a driving force.When the United States entered just such a glowing period after the end of the Second World War,it had a market eight times larger than any competitor,giving its industries unparalleled economies of scale.Its scientists were the world's best,its workers the most skilled.America and Americans were prosperous beyond the dreams of the Europeans and Asians whose economies the war had destroyed.
It was inevitable that this primacy should have narrowed as other countries grew richer. Just as inevitably,the retreat from predominance proved painful.By the mid-1980s Americans had found themselves at a loss over their fading industrial competitiveness.Some huge American industries, such as consumer electronics,had shrunk or vanished in the face of foreign competition.By 1987 there was only one American television maker left,Zenith.(Now there is none:Zenith was bought by South Korea's LG Electronics in July.)Foreign-made cars and textiles were sweeping into the domestic market. America's machine-tool industry was on the ropes.For a while it looked as though the making of semiconductors,which America had which sat at the heart of the new computer age, was going to be the next casualty.
All of this caused a crisis of confidence.Americans stopped taking prosperity for granted.They began to believe that their way of doing business was failing,and that their incomes would therefore shortly begin to fall as well. The mid-1980s brought one inquiry after another into the causes of America's industrial decline.Their sometimes sensational findings were filled with warnings about the growing competition from overseas.
How things have changed!In 1995 the United States can look back on five years of solid growth while Japan has been struggling. Few Americans attribute this solely to such obvious causes as a devalued dollar or the turning of the business cycle.Self-doubt has yielded to blind pride."American industry has changed its structure,has gone on a diet,has learnt to be more quick-witted,"according to Richard Cavanagh,executive dean of Harvard's Kennedy School of Government,"It makes me proud to be an American just to see how our businesses are improving their productivity,"says Stephen Moore of the Cato Institute,a think-tank in Washington,D C.And William Sahlman of the Harvard Business School believes that people will look back on this period as"a golden age of business management in the United States." The loss of U.S.predominance in the world economy in the 1980s is manifested in the fact that the American______.
A.TV industry had withdrawn to its domestic market
B.semiconductor industry had been taken over by foreign enterprises
C.machine-tool industry had collapsed after suicidal actions
D.auto industry had lost part of its domestic market

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[不定项选择题]共用题干 第二篇

Are These Food Safe to Eat?

Traditionally,in plant breeding,there are crossing varieties of the same species in ways they could cross naturally.For example,disease-resistant varieties of wheat have been crossed with highyield wheat to combine these properties.This type of natural gene exchange is safe and fairly predictable.
Genetic engineering(G E)makes it possible to exchange genes between unrelated species that cannot exchange genes with each other in a natural way.GE can involve the exchange of genes be-tween vastly different species一e.g. putting scorpion toxin genes into maize or fish antifreeze genes into tomatoes.It is possible that a scorpion toxin gene,even when it is in maize DNA,will still get the organism to produce scorpion toxin一but what other effects may it have in this alien environment? We have already realized this problem一adding human growth hormone genes to pigs certainly makes them grow一but it also gives them arthritis and makes them cross-eyed,which was entirely out of expectation.
It won't be difficult to find out,for example,that the gene for human intelligence will not have the same effect if it is inserted into cabbage DNA as it had in human DNA一but what side-effect would it have?In other words,is genetically modified(GM)food safe to eat?The answer is that no-body knows because long-term tests have not been carried out.
Those companies who want a GM product approved in the UK or USA are required to provide regulatory bodies with results of their own safety tests.Monsanto's soya beans were apparently fed to fish for 10 weeks before being approved.There was no requirement for independent testing,for longterm testing,for testing on humans or testing for specific dangers to children or allergic people.
The present opinion of the British Government is that"There is no evidence of long-term dangers from GM foods."In the US,the American Food and Drug Administration is now being prosecuted for covering up research that suggested possible risks from GM foods. Which statement is true based on the passages? A:If a company can provide regulatory bodies with results of their own safety tests,it can get GM product approvals from the UK or US
A.
B.The present opinion of the British Government is right.
C.Monsanto's soya beans were apparently fed to fish for 10 weeks after being approved.
D.Adding human growth hormone genes to pigs certainly makes them allergic.

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