2. 外语
  3. The European Union had not approved a number of genetically modified crops until late 1998. But【C1】______public concern over【C2】

The European Union had not approved a number of genetically modified crops until late 1998. But【C1】______public concern over【C2】

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问题     The European Union had not approved a number of genetically modified crops until late 1998. But【C1】______public concern over【C2】______supposed environmental and health risks led several EU countries to demand a moratorium (暂时禁止)【C3】______imports of any new GM product. By late 1999 there were enough such countries to【C4】______any approvals of GM product.
    Last year, America【C5】______a complaint at the WTO about the moratorium,【C6】______that it was an illegal trade barrier because there was no scientific【C7】______for it. As more studies have been completed on the【C8】______of GM crops, the greens’ case against them has weakened.【C9】______evidence has【C10】______of health risks from eating them. And, overall, the studies have shown that the environmental effects【C11】______modified crops are not always as serious as the greens【C12】______.【C13】______, environmentalists continue to find fault【C14】______such studies and argue that they are【C15】______.
    【C16】______Americans seem to be happy enough to consume food made from GM crops.opinion polls continue to show that European consumers dislike the idea, Europeans seem to be taking the attitude【C17】______, since there【C18】______the slightest possibility of adverse【C19】______and since it is unclear how they, as consumers, benefit from GM crops, they would rather not【C20】______the risk.
【C15】
选项 A、inconclusive
B、ineffective
C、inefficient
D、invalid
答案A
解析 词义辨析题这四个词都有“无效的”意思，inconclusive指(结论、决定等)非决定性的，无效的，无结果的；ineffective指效果不好的；inefficient指效率不高的；invalid无道理的，站不住脚的。此处原文指他们的结论并没有最终定论，而不是指这些研究没有科学依据，故选A。
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