题目

听第6段材料,回答问题。 (1) How long did Michael stay in China? A . Five days. B . One week. C . Two weeks. (2) Where did Michael go last year? A . Russia. B . Norway. C . India. 答案:B A19.下列实验操作基本正确的是(  )A.闻盐酸气味B.测溶液pH值C.稀释浓硫酸D.加热液体
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