高考考前最后冲刺英语模拟试题 (三) 下 (含答案)

2008-06-04 16:27:19   来源:转载   评论:0 点击:
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    Millions of people die of hunger in southern Africa every year, but when Zambia was offered thousands of tons of free maize by the US, the government politely said no.
    “We don’t know whether the food is safe,” said Zambia’s Commerce, Trade and Industry Minister Dipak Patel. His worries are shared by countries around the world that are in two minds about America’s genetically modified(转基因的) crops. Just last week, EU member nations were discussing whether or not to import GM sweet corn from the US.
    This means they can make crops more productive and resistant to disease by adding genes from other species(物种). They can also create food with special characteristics, such as “golden rice”, which is enriched with vitamin A. But many people believe GM foods are a health risk.
    “If left to me, I would certainly not eat GM foods,” said Scottish scientist Arpad Pusztai. “We are putting new things into food which haven’t been eaten before. The effects on the immune(免疫) system are not easy to predict.” At the moment, the official argument is that GM foods “ are not likely to present risks for human health.” But there are still many questions to be answered as the foods are produced in different ways.
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