749. William found it increasingly difficult to read, for his eyesight was beginning to ________.

A.disappear

B.fall

C.fail

D.damage

750.I ______ a bank account after I made 1,000 by, doing a part-time job during thesummer vacation.

A.borrowed

B.opened

C.entered

D.ordered

749.答案是C；

考查动词的辨析。disappear消失，不复存在;fall降落，跌倒，降低;fail (指健康)倒退，衰弱；damage损害，毁坏，加害于。句意:William发现阅读越来越困难了，因为他的视力开始衰退了。increasingly difficult越来越困难，用来表示一个循序渐进的过程，故选C。

750.答案是B；

考查动词的辨析。open a bank account在银行开帐户。句意:暑假兼职打工挣了 1000美元后，我在银行开了帐户。