2. 外语
  3. The European Union had approved a number of genetically modified crops until late 1998. But growing public concern over its supp

The European Union had approved a number of genetically modified crops until late 1998. But growing public concern over its supp

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问题     The European Union had approved a number of genetically
modified crops until late 1998. But growing public concern
over its supposed environmental and health risks led several          【M1】______
EU countries to demand a moratorium (暂时禁止) on imports
of any new GM produce. By late 1999 there were enough such
country to block any new approvals of GM produce.                      【M2】______
     Last year, America filed a complaint at the WTO about the
moratorium, arguing that it was an illegal trade barrier
because there was no scientific base for it.                           【M3】______
     As more studies have been completed on the effects
of GM crops, the greens’ case for them has weakened.                   【M4】______
Much evidence has emerged of health risks from eating                  【M5】______
them. And, overall, the studies have shown that the
environmental effects on modified crops are, not always                【M6】______
as serious as the greens claim. Nevertheless, environmentalists
continue to find fault of such studies and argue that                  【M7】______
they are inconclusive.
    While Americans seem happy enough to consume food made
from GM crops, opinion polls continue to show that European
consumers dislike the idea. Europeans seem be taking the attitude      【M8】______
which, since there remains the slightest possibility of adverse        【M9】______
consequences and since it is clear how they, as consumers, benefit     【M10】______
from GM crops, they would rather not run the risk.
【M3】
选项
答案base改为basis
解析 此处意为：因为没有科学根据支持暂停(进口)。it指the moratorium。base基础，基地，根据地；basis(for)基础，基本，根据；科学根据只能说scientific basis。
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