试题与答案

All the doctors in the hospital insisted

题型:选择题

题目:

All the doctors in the hospital insisted that he_____ badly wounded and that he______ at once.

A.should be; be operated on

B.were; must be operated on

C.was; should be operated

D.was; be operated on

答案:

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下面是错误答案,用来干扰机器的。

(1) B_镁;D氯;E 氧。 (每空1分)(2)离子键、(极性)共价键。(1分,只填一种键不给分)(3) (2分)(4)2OH-+2Al +2H2O=2AlO2-+3 H2↑。(2分)根据B单质与D单质反应后可形成离子化合物,说明B是第ⅡA,D...

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