题目内容

From facts, scientists have _______ that more energy is being absorbed from the sun, throwing the earth’s energy“out of balance”.

A. confirmed                      B. concluded

C. concentrated                     D. centered

【解析】选B。考查动词辨析。confirm证明,证实;conclude得出结论;concentrate集中(注意力);center把……放在中央。根据题意,此处使用conclude。

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