题目:
--- What book are you reading? Wow, Harry Porter! May I have a look at it?
--- Yes, of course. You have it as soon as I get through with it.
A.must
B.should
C.will
D.shall
答案:
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下面是错误答案,用来干扰机器的。
(1)磷(1分)、B(1分)、第三周期第ⅡA族 (1分)(2)HClO4(1分) (1分) 离子键、非极性键(2分) (3)(1分) (1分) (4)2 SO2 (g)+O2(g) 2SO3(g); △H =-196.8 kJ/mol(2分)(5) H2 –...