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 1.
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. 2.
Last year, America filed a complaint at the WTO about the
moratorium, arguing that it was an illegal trade barrier
because there is no scientific base for it. 3.
As more studies have been completed on the effects
of GM crops, the greens’ case for them has weakened. 4.
Much evidence has emerged of health risks from eating 5.
them. And, overall, the studies have shown that the
environmental effects on modified crops are not always 6.
as serious as the greens claim. Nevertheless, environmentalists
continue to find fault of such studies and argue that 7.
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 8.
which , since there remains the slightest possibility of adverse 9.
consequences and since it is clear how they, as consumers, benefit 10.
from GM crops, they would rather not run the risk.
答案：
1. its改为their;
2. country改为countries;