问题
选择题
I really found it difficult to read, for his eyesight was beginning to________.
A．disappear
B．stop
C．fail
D．cut
答案
答案：C
题目分析：句意:我真的发现很难读懂，因为他的视力正开始衰退。A. disappear 消失，B. stop 停止，C. fail 衰退，D. cut 割，剪。据句意，故选C。