题目

在生成和纯化硝基苯的实验过程中,下列操作未涉及的是() A . B . C . D . 答案:B根据图片及例句提示仿写句子。【1】例: I often clean the room after dinner. My father________________.【2】例: I'm dancing at four o'clock. __________________________【3】例: —What's she doing? —She is listening to music.—________________ —________________【4】例: My birthday is on April the twentythird. __________________________
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