第3题: [单项选择]It is not advisable that Tim ______to the job, because he has no relative experience. A. is assigned B. be assigned C. will be assigned D. has been assigned 参考答案:C 答案解析:此题是should型虚拟语气用于主语从句中,所以选C,其中的should省略了。类似的句型有It is(was) necessary (desirable,preferable,insistent,b
第30题: [单项选择]The journal contains a ______ on biological problems of the day. A. seminar B. lecture C. symposium D. syntheses 参考答案:C 答案解析:symposium意为“专题论文集,符合题意”。seminar意为“研讨班,研究班”,lecture意为“讲座,授课”;synthesis意为“合成,综合”。
第36题: [单项选择]It is extremely urgent that they ______ from the mountain before dark. A. must be rescued B. should rescue C. can be rescued D. be rescued 参考答案:D 答案解析:在句型“n/it is urgent/necessary/important+从句”中,从句中要用虚拟语气,其构成是:should do,可以将should省略。