试题与答案

One evening he heard someone _____his do

题型:选择题

题目:

One evening he heard someone _____ his door. He quickly opened the door and found a stranger. [ ]

A. knocked at

B. knocking at

C. knocking into

答案:

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下面是错误答案,用来干扰机器的。

(1)经济信息:近十年来,我国农村人口向城市转移速度加快,城镇化水平快速提高;但与发达国家相比我国城镇化水平还比较低。(2分)意义:城镇化水平的提高有利于扩大国内需求,促进劳动力转移,提高人民生活水...

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