In the process，the light energy converts to heat energy．

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问题 In the process，the light energy converts to heat energy．

选项 A、reduces
B、changes
C、leaves
D、drops

答案B

解析划线词为动词，意思是“转变，变换”，多与to/into连用，与B项changes(变化)意思相近，又如：Let me change the dollar bill for coins．让我把这张美元的纸钞换成硬币。A项意为“减少”，例：He is trying to reduce expenses．他正努力减少开支。C项意为“离开”，例：Mary left school last year and she is working in a shop now．玛丽去年退了学，现正在一家商店工作。D项意为“下降；终止”，例：If a fire alarm is given，drop whatever you are doing，and leave the building at once．如果听到火警，立即停止手头的一切工作，马上离开建筑物。

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