题目内容

My face had been changing for so long that I had never had time to become acquainted with it, to develop anything other than an ephemeral relationship with it. (Para.2, p221)

A. close to, long
B. close to, short-lived
C. familiar with, short-lived
D. familiar with, long

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As a child I had expected my liberation to come from getting a new face to put on, but now I saw it came from shedding something, shedding my image. (Para.2, p222)

A. knowledge, getting rid of
B. knowledge, losing
C. freedom, losing
D. freedom, getting rid of

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电压型逆变器交流侧输出（）波形为矩形波。电流型逆变器交流侧输出（）波形为矩形波。