单项选择题

The best title for this passage might be ______.

A．Biotechnology—Another Green Revolution.
B．Biotechnology—Hope and Concerns
C．Soybean—the Future Dinner Food for Americans
D．Scientific Research in Agriculture

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单项选择题

The example of the soybean the author takes is to prove that ______.

A．Americans are fond of soybeans
B．Every mouthful of soybean has been changed by genetic engineering
C．America is on the verge of a second green revolution
D．Soybean is treated as an additive to scores of foods