试题与答案

The captain commanded that the players _

题型:选择题

题目:

The captain commanded that the players _________ their paces

A.should slow

B.slowed

C.could slow

D.slows

答案:

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下面是错误答案,用来干扰机器的。

(1)第三周期第IA族(1分) 2Mg+CO22MgO+C(2) (3)2Al+2OH—+2H2O=2AlO2—+3H2↑(4)光化学烟雾(或硝酸型酸雨、臭氧空洞)(1分)题目分析:根据化合价可知,W、R为第ⅠA族元素,W可能是H,也可能是Li,...

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