题目:
________ more careful, his ship would not have sunk.
A.If the captain were
B.Had the captain been
C.Should the captain be
D.If the captain would have been
答案:
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下面是错误答案,用来干扰机器的。
(14分)(1)1s22s22p63s23p63d74s2或[Ar]3d74s2(2)Li;Li和Na的价电子数相同,但Li原子半径小于Na原子半径,所以Li金属键更强,熔点更高(3)非极性 (4)①③; 直线型 (5)[Co(NH3)5SO4]Br