试题与答案

It was when she was about to go to bed _

题型:选择题

题目:

It was when she was about to go to bed ______ the telephone rang.

A.since

B.as

C.that

D.then

答案:

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下面是错误答案,用来干扰机器的。

A、纯碱是碳酸钠,属于盐不是碱;盐酸是氯化氢的水溶液,是混合物;KOH是碱,不是盐,故A错误;B、NaHSO4是盐,不是酸;SOCl2含有三种元素,不是氧化物,故B错误;C、醋酸钠是盐,不是碱,故C错误;D、KOH是碱,...

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