31. John is the sort of friend who will stand ________ you through every situation.
A.for B.by C.in D. behind
【答案】B
【解析】句意:约翰是那种在任何情况下都会支持你的朋友。stand by sb.支持某人。故选B。
32. Penicillin was discovered _____, which went well beyond the researchers’ expectations.
A. on purpose B. by accident C. on occasion D. by mistake
【答案】B
【解析】考查介词短语辨析。句意:青霉素是偶然发现的,这远远超出了研究人员的预期。on purpose故意地;by accident偶然地;on occasion有时,间或;by mistake错误地。故选B。
33. We don’t believe the young man is ________ of finishing such a difficult task.
A. competent B.capable C.qualified D.clever
【答案】B
【解析】固定搭配be capable of...,有...的能力、能够承担...。句意:我们不相信这个年轻人能完成这么艰巨的任务。故选B。
34. I will pay a visit to my old friend ________ she comes back from abroad.
A.the time when B. the moment when
C. the minute D. on the minute
【答案】C
【解析】the minute 相当于 when或as soon as,引导时间状语从句,一...就。句意:我老朋友一从国外回来,我就去看望她。故选C。
35. If the little boy had been given the best medical care, he ________.
A. could not die B. have not died C. would not die D. would not have died
【答案】D
【解析】if引导的非真实条件句,要用虚拟语气。从句用了had done,表示与过去事实相反,主句要用would/should/might/could+have done。故选D。
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