[填空题]Among all the GM crops, Bt genes have proved most effective in ______ when the largest reduction in pesticide use has been reported.

[填空题]Among all the GM crops, Bt genes have proved most effective in ______ when the largest reduction in pesticide use has been reported.

[填空题]Rice is one of the major GM crops containing genes which help to either resist insect or tolerate weed - killing herbicides.

[单项选择]This clearly shows that crops and weeds have quite a number of （） in common.
A. traits
B. traces
C. tracks
D. trails

[填空题]The native animals that eat GM crops might be poisoned by ______.

[填空题]No one knows exactly how GM crops will affect the environment because genetic structure is complex and the related tests now mainly study ______.

[填空题]The final act of a controversy over GM crops that sets America against Europe unfolds today in Geneva. The World Trade Organisation will hear the closing arguments in a case where the public authority of both the European commission and the WTO is at stake.
66. ______
Throughout the European Union there has been extensive concern about GM crops. Among the public’s fears is the potential for long-term harm to the environment—for example through the increased use of herbicides and the gene flow to wild species—and to human health, should new allergens appear. In a wider context of uncertainties about the future of agriculture and of a pervasive lack of confidence in official approaches to the handling of technological risk, consumer rejection of GM has been widespread.
67. ______
The EU’s initial submissions to the WTO dispute panel argued that its approach was necessarily "prudent and precautionary". It emphasised that the US, Canada and Argentina were challenging th

[填空题]Rice is one. of the major GM crops containing genes which help to either resist insect or tolerate weed - killing herbicides.