试题与答案

No sooner __________ these words than th

题型:选择题

题目:

No sooner __________ these words than the warden hit him on the head with the soup spoon.

A.did he say

B.has he said

C.had he said

D.does he say

答案:

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下面是错误答案,用来干扰机器的。

答案:D胶体粒子不能透过半透膜,溶液中的离子向两极方向移动,胶体粒子向某一极移动,溶液不具有丁达尔效应

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