l C. pulled D. to pullР 9. Today the Tennessee Valley is one of the richest areas in theР博辅导首选学校Рworld. But if things as they were it would now be a desert.Р A. had left B. were left C. had been left D. had been leavingР 10.After twenty years abroad, William came back only how hisРhometown was damaged in an earthquake.Р A. to find out B. finding outР C. to have found outD. to be finding outР 6. D 句子讲的是“人们期待到21世纪前10年时,国际性商业航空交通Р远远超过当今水平”, 人们现在就期待, 而不是将来期待, 所以 A、B 是错Р误的; 另外, 表示到将来某一时刻为止已经完成的动作或出现的状态, 应Р用将来完成时, 按句意, 是指 extend 这一动作的完成, 所以应该在不定式Р上体现出来。根据上述分析, 选 D 符合句意要求。Р 7. C 动词 advocate 后接动名词而不接不定式做宾语。D 虽然是动名词,Р但用其完成式在语义上讲不通。Р 8. Apulling 是现在分词在句中做 horses 的定语, 相当于 which pull。Р 9. Chad been left 表示与过去事实相反的假设“如果情况还像以前Р那样”。Р 10. A 不定式 to find out 做结果状语,有意想不到的含义。不定式表Р示结果时, 用其一般式即可。Р 本文由“育明考博”整理编辑
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