问题
选择题
William found it increasingly difficult to read，for his eyesight was beginning to ．
A．disappear
B．fall
C．fail
D．damage
答案
答案：C
词义辨析。A消失；B落下;跌倒；C失败，不及格，(指健康)衰退;变弱;消失；D破坏；句意：威廉发现阅读越来越困难，因为他的视力开始衰退。
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