题目内容

GM foods also have shortcomings:

A. The so-called increase in production is not affected by environmental impacts
B. If natural disasters such as rain or snow are encountered, it is also possible to reduce production even more
C. At the same time, in the cultivation process, genetically modified crops may evolve into farmland weeds; other species may be affected by gene drift.
D. Genetically modified foods may cause allergies in the consumers.

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