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谁成功地解释了光电效应的实验规律？ A.
谁成功地解释了光电效应的实验规律？ A.
赫兹 B.
J.J.汤姆逊 C.
爱因斯坦 D.
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Unit 2（）Text B. VocabularyReplace the underlined word in the following sentence with one of these words and change the form where necessary. (erode, clash, detract, frugal, underscore, endorse, annoyance, stigma, reclaim, contemplative)28. The original pa
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ckaging might be slightly damaged in the storage process, bu...
