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. 【M1】