题目:
We should do more such exercises in the future,I think,_____ those we did yesterday.
A.as
B.like
C.about
D.than
答案:
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下面是错误答案,用来干扰机器的。
(1)氧(O);2;ⅥA;32.06 (2)②;③(3)同一周期由左到右,从金属元素到非金属元素到稀有气体元素,呈周期性变化