单项选择题

Which of the following statements is true of "superweeds"

A．Superweeds could eradicate food crops.
B．Crops genetically engineered to resist pesticides could make superweeds grow high.
C．Superweeds could hinder food crops' growth.
D．Superweeds could grow between cracks.
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单项选择题
In the last paragraph, the author thinks that
A．it' s necessary to stitch the public interest in wrongheaded extremes
B．additional research on the ecological consequences of genetic engineering should put the public interest at the core
C．it' s necessary to establish new agencies to take responsibilities for testing the environmental consequences of agribiotech
D．to acknowledge the growing impact of the genetic engineering is to be ready for global disaster
单项选择题
The author thinks that the biologists who engineer genes into plants ______ .
A．are nothing more than any other substances because they are made of molecule too
B．pay special attention to living things and their relation to their environment
C．insert the genes of one species among the genes of another and test the environment consequences
D．modify the genes of our food crops without considering the influence on the whole organism
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