than

　　1.Mary is _______ than Alice. (1992)

　　A. more experienced a teacher B. a more experienced teacher

　　C. more an experienced teacher D. more experienced teacher

　　an experienced teacher, 比較級加在形容詞前，因此B。

　　2_______ the two, Bob is ________ student. (1995)

　　A. Of, more diligent B. In, more diligent

　　C. Of, the more diligent D. In, the more diligent

　　the + 比較級 + of the two，因此C。

　　3Western Nebraska generally receives less snow than _______ Eastern Nebraska. (1996)

　　A. in B. it receives in C. does D. it does in

　　完整形式應(yīng)該是：than Eastern Nebraska receives snow，省去了部分謂語，保留了主語和助動(dòng)詞，可以倒裝，因此C。

　　4The indoor swimming pool seems to be a great more luxurious than _______. (1998)

　　A. is necessary B. being necessary C. to be necessary D. it is necessary

　　這個(gè)句子是一個(gè)由than引導(dǎo)的比較狀語從句，既然是從句那么可以排除BC;than引導(dǎo)的從句中省略了的主語應(yīng)該是the indoor swimming pool，為避免重復(fù)，一般省略，不需要用it來指代。A。

　　5 There ought to be less anxiety over the perceived risk of mountain climbing than ______ in the public mind today. (1999)

　　A. exists B. exist C. existing D. to exist

　　省略了的主語是anxiety，因此謂語動(dòng)詞用第三人稱單數(shù)：A

　　6The experiment requires more money than _______. (2002)

　　A. have been put in B. being put in

　　C. has been put in D. to be put in

　　than引導(dǎo)的從句中省略了的主語應(yīng)該是money，因此謂語動(dòng)詞要用第三人稱單數(shù)，C。