The word "minute" in the first sentence most probably means ______. Man cannot directly utilize the solar energy falling on the

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问题 The word "minute" in the first sentence most probably means ______.
Man cannot directly utilize the solar energy falling on the earth because ______.

选项 A、only a small part of the solar energy reaches the earth
B、the sun produces different heating effects in different places
C、the sun is too distant from the earth
D、scientific knowledge is insufficient

答案D

解析 细节题。从文章第四句话“At present,because of the lack of scientific knowledge,we use this energy indirectly,and it is our only final source of power.”可知:由于人类缺少相关的科学知识,太阳能现在只是间接地在使用。因此,D选项为最佳答案。
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