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12. Early forms of life on Earth, _____ in the absence of oxygen, required elements such as sulfur instead. (A) which lived (B) whose life (C) lived (D) were living 答案选A 我选C 为什么这里不能用lived分词作定语呢？ which会不会出现指代问题forms or earth？ 感觉gmat语法做多了来做toefl很不适应。。。。 39. The unique ability of the horseshoe crab detected bacterial endotoxins was a chance
discovery in the 1970’s at the Marine Biological Laboratory in Woods Hole, Massachusetts. 答案B 对答案没有问题 但是后面的a chance discovery是什么意思？ chance有作adj的用法么？
40. Although experimental television had been available since the
1920’s, many people in
United States did not see a broadcast until was the New York World’s Fair of 1939. 答案D 请问有since谓语动词是不是应该是现在完成时？ 或者只要是完成时都可以？ | 
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发表于 2006-8-7 12:43:00
