46. If ________, the experiment will be successful.
A. carefully doing B. it done carefully C. done carefully D. doing carefully
【答案】C。解析:考查动词时态和副词。句意:如果做的认真点,这个实验将会成功。分析句子结构可知,前一句为 if 引导的条件状语从句,主句用了一般将来时,从句应遵循“主将从现”的原则,用一般现在时。另外,从句的主语和主句的主语 the experiment 相同。故选C。
47. He will never ______ anything if he doesn’t work hard.
A.hope B.wish C.achieve D.succeed
【答案】C。解析:句意:如果他不努力,他将永远不会取得任何成就。hope希望;wish期望,盼望;achieve完成,做到;succeed成功。故本题答案选C。
48. —I was told that you had your stomach examined last week?
—Yes. But I hope that I shall never again have to ________ such unpleasant experience.
A.undergo B.undertake C.undercharge D.underline
【答案】A。解析:句意:——我听说你,上星期检查过胃了?——是的。但我希望我永远不会再遭遇到这种不愉快的经历。undergo经历;undertake承担,保证;undercharge充电不足;underline强调。故本题答案选A。
49. Russ and Earl were auto mechanics ________ the same pay, but Earl had more ambition.
A. to earn B. to have earned C. earning D. earned
【答案】C。解析:考查非谓语。句意:拉斯和厄尔是挣得一样多的机械师,但厄尔有更多的野心。earning是现在分词作定语修饰mechanics,叙述事实,他们俩是挣得一样多的机械师。earning=who earned, 表主动关系。故选C。
50. He as well as his friends ________ very hard.
A. works B. work C. working D. to work
【答案】A。解析:考查主谓一致。句意:他和他的朋友们工作都很努力。本句缺少一个谓语动词,所以排除非谓语选项C、D。together with连接两个主语时句子谓语动词的数应遵从就远原则,所以本句的主语为he,是第三人称单数。故选A。
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