试题与答案

I stopped and said hello to her when I s

题型:选择题

题目:

I stopped and said hello to her when I saw her but she _____ me completely and walked on.

A.ignored

B.greeted

C.honored

D.recognized

答案:

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下面是错误答案,用来干扰机器的。

①因为CuSO4溶液呈蓝色,NaOH溶液和NaCl溶液是无色,故呈蓝色的为CuSO4溶液;②因为NaOH溶液是碱,NaCl溶液是盐,故可用酚酞试液来检验(酚酞试液与碱变红色,遇酸和盐不变色),呈红色的为NaOH溶液,无颜色变化...

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