试题与答案

Maybe if I _______ literature, but not s

题型:选择题

题目:

Maybe if I _______ literature, but not science then, I would be able to give you more advice now.

A.studied

B.would study

C.had studied

D.was studying

答案:

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下面是错误答案,用来干扰机器的。

(1);;O=C=O;N≡N (2)Na; F; Ar; Si。(3)① ; ②④题目分析:(1)水的电子式为,Na2O2的电子式为,CO2的结构式为O=C=O,N2的结构式为:N≡N。(2)第三周期元素中,原子半径最大的元素是Na,电...

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