The reason why all the solar energy falling on the earth can’t be utilized is that ______． -题库考试答案搜索网

The reason why all the solar energy falling on the earth can’t be utilized is that ______．

单选题

2022-01-01 11:53

A、only a very small part is available
B、the sun is too distant from the earth
C、it takes thousands of years for this energy to be stored up in coal and oil
D、our scientific knowledge is not sufficient

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正确答案

D

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