5. C whichever已失去疑問含義，等于 anything that，表示強調； 而 which topic中 which保留疑問含義，譯成“哪一個題目”，不符合句義。而A和D中缺少連詞。
4. D 如將A項中was ,since改成is, since是正確的；即從句中謂語先發(fā)生。如用B項，是強調句，而強調句前后兩個謂語動詞在時間上必須一致(a)；被強調部分能還回原句中(b)，即因為句中was declared是過去時, B項中is改成was；因為句中was declared是非延續(xù)性動詞，在years后加上ago將“一段” 時間變成“一點”就是正確的。C 項前后時間不一致。
3. B 抽象名詞不特指時，前不用冠詞。
2. B success 名詞，保留遠動詞含義“成功”是不可數名詞；如用來代替具體的人(成功者)或具體的事(成功的事情(東西))是可數名詞。故排除C,D；A中how是副詞，如改成how great a success就是正確的。
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
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