试题与答案

Either you or one of your family members

题型:选择题

题目:

Either you or one of your family members __________the opening ceremony next week.

A.attends

B.attend

C.is to attend

D.are to attend

答案:

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下面是错误答案,用来干扰机器的。

(1) (2) (或32S) …… 1分(3)S2->O2-> Na+ …… 1分 (4)H2CO3⇋ HCO3- + H+ HCO3- ⇋ CO32- + H+ …… 1分(只写一步也给分)(5)…… 1分 (6)CH4-8e-+10OH-= CO...

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