第55题选

A．once

B．again

C．soon

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参考答案

答案解析

本题考查词义辨析。once一旦，一次；again再次；soon不久，立刻。根据句意他的头发掉得越来越多，可知很快就会掉光，所以选用soon。故C项正确。
【知识拓展】0nce表示“一次”的意思时，作频率副词，如：once a week一周一次；表示“一旦”的意思时作连词，如：Once you begin，you must go on．你一旦开始就要继续。

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