1.Careful surveys have indicated that as many as 50 percent of patients do not take drugs______directed.

　　A.like B. so C.which D. as

　　Best Answer:D

　　详解：

　　【译文】仔细的调查表明，多达50%的病人未按规定服药。

　　【注释】as有“以…的方式、依照”的意思。so做连接词时意思是“因此、所以”。so后接分词时是副词，意思是“这样、如此”。which通常引出定语从句，代表所修饰的名词，用在本题不合适。like做连词用以表示两个事物的比较。

　　2.This ticket______you to a free meal in our new restaurant.

　　A.gives B. grants C.entitles D. credits

　　Best Answer:C

　　详解：

　　【译文】凭此券你可在我们的新餐厅免费就餐一次。

　　【注释】give表示“给，提供，授予”;grant意为“同意，准予;给予，授予”;entitle指“给以权利，给以资格”;credit意为“提供信用、信任”。

　　3.You______her in her office last Friday;she's been out of town for two weeks.

　　A. needn't have seen B. must have seen C.might have seen D. can't have seen

　　Best Answer:D

　　详解：

　　【译文】上星期五你不可能在她的办公室看见她，她离开本市已经两周了。

　　【注释】本题考核“情态动词+完成式”的用法。

　　4.That was so serious a matter that I had no choice but______the police.

　　A. called in B. calling in C. call in D. to call in

　　Best Answer:D

　　详解：

　　【译文】那件事如此严重，我除了请警察来，此外别无选择。

　　【注释】have no choice but+不定式是习惯用法，意为“只能……别无选择”。

　　5.She was so______in her job that she didn't hear anybody knocking at the door.

　　A.attracted B. absorbed C.drawn D. concentrated

　　Best Answer:B

　　详解：

　　【译文】她工作如此专心以致于没听到有人敲门。

　　【注释】attract意为“吸引，引起……的注意”，相当于make someone interested in something。draw与attract同义。be absorbed in和concentrate on都表示“专心致志于”。