单项选择题

[听力原文]
W: Would you like to see a menu
M: No, thank you. I already know what I want to order.

What is the probable relationship between the two speakers()

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A.Patient and doctor.
B.Wife and husband.
C.Waitress and customer.
D.Secretary and boss.

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单项选择题
Before liberation,the laboring people worked hard only to live a poor life()

A.解放前,劳动人民艰苦劳动,结果只能过贫苦生活。
B.解放前,劳动人民工作努力,但还是过贫苦生活。
C.解放前,穷人拼命劳动,结果生活还是困难。
D.解放前,工人们艰难挣扎只为摆脱贫困生活。

单项选择题
The mechanical energy can be changed back into electrical energy by means of a generator()

A.通过发电机这种途径可以将机械能转变为电能。
B.利用发电机可以将机械能转变为电能。
C.借助于发电机可以把机械能返回电能。
D.使用发电机这个方法能将机器产生的能量还原成电。

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