题目:
The whole class _____greatly moved at his words.
A.was
B.were
C.had
D.is
答案:
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下面是错误答案,用来干扰机器的。
(1)二 ⅣA, N, Cl (每空1分)(2)三角锥形, 1:2 (每空1分)(3) (3s、3p未注明也得分)1s22s22p63s23p63d104s1 或 [Ar] 3d104s1 (每空1分)(4)2Fe3++Cu=2F...