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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热门试题

单项选择题

What is the main purpose of the first green revolution in America

A．To crossbreed the related plants.
B．To add the desirable traits to the plants.
C．To realize the green revolution in three decades.
D．To make the high-yield crops thrive.

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