5.　　 C whichever已失去疑问含义，等于 anything that，表示强调； 而 which topic中 which保留疑问含义，译成“哪一个题目”，不符合句义。而A和D中缺少连词。

4.　　 D 如将A项中was ,since改成is, since是正确的；即从句中谓语先发生。如用B项，是强调句，而强调句前后两个谓语动词在时间上必须一致(a)；被强调部分能还回原句中(b)，即因为句中was declared是过去时, B项中is改成was；因为句中was declared是非延续性动词，在years后加上ago将“一段” 时间变成“一点”就是正确的。C 项前后时间不一致。

3.　　 B 抽象名词不特指时，前不用冠词。

2.　　 B success 名词，保留远动词含义“成功”是不可数名词；如用来代替具体的人(成功者)或具体的事(成功的事情(东西))是可数名词。故排除C,D；A中how是副词，如改成how great a success就是正确的。

1.　　 B

100. A baby animal knows animals of _____ own kind when it sees them, when it smells them and it hears them.

　　 　　 A. her　　　　　 B. one’s　　　 C. its　　　　　 D. their

分析

99. It is said that he got laughed at for _____.

A.　　 his dishonest 　　B. been dishonest　　　　　

B.　　 C. being dishonestD. to be dishonest　　　　

98.The doctor said I was over-weight. If only I _____ less!

　　　 　 A. ate　　　　　　　　　　　　　 B. have been eating

　　　　 C. have eaten　　　　　　　　　 D. had eaten　　　　

97. One of the most important social problems of today is _____ jobs to the unemployed.

　　 A. what to be given　　　　　　 B. having given

　　 C. how to give　　　　　　　　　 D. to have given　　　　　　

96. The doctor would allow him to go home _____ he remained in bed.

　　 A. as though　　　　　　　　　　 B. for fear that

　　 C. on condition that　　　　　　 D. as far as