2. 外语
  3. A. when it is absorbed by matter B. when it is cloudy C. because they can pass through solid objects D. when the sunrays are fie

A. when it is absorbed by matter B. when it is cloudy C. because they can pass through solid objects D. when the sunrays are fie

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问题 A. when it is absorbed by matter
B. when it is cloudy
C. because they can pass through solid objects
D. when the sunrays are fierce
E. when a change in the nucleus of an atom takes place
F. when electron rearrangement takes place
Chemical energy is generated______.
选项
答案F
解析 根据题干线索词chemical energy将原文定位至第五段第五句Chemicalenergy comes from electron(电子)rearrangement．这里come from与be generated意思相符，均表示“产生于，来源于”。F选项显然是对原文的同义改写，故F为正确答案。
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