[单选题] 提问人:匿名网友 提问时间:2021-08-22

What do we learn from the last paragraph?


A .Biotechnology can solve all our future energy problems.
B .Biological power is cheaper than nuclear power.
C .Biological power may not be as dangerous as nuclear power.
D .Biological power will keep all its promises.

提问人:匿名网友 提问时间:2021-08-22

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