试题与答案

—Mom,I can't see any point in working ha

题型:选择题

题目:

—Mom,I can't see any point in working hard at all the subjects at school.

—Come on,dear. Years of hard work will surely ________ in the future.

A.make sure

B.pay off

C.pay for

D.pay back

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:A、乙氧气和丁氧化铁不能反应,故A错误;B、乙盐酸和丙硫酸铜不能反应,甲锌和丁氢氧化钠不能反应,故B错误;C、甲氢氧化钠与乙三氧化硫能反应生成硫酸钠和水,丙氢氧化钾和丁硫酸铜能反应生成...

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