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梯级演练·强技提能 Ⅰ. 单项填空 1. (2017·新课标全国卷)There’s no way of knowing why one man makes an important discoveryanother man, also intelligent, fails. A. sinceB. ifC. asD. while 2. (2017·山东高考)Be —you can’t expect me to finish all this work in so little time. A. reasonable B. confident C. creative D. grateful 3. (2017·安徽高考)Interest is as to learning as the ability to understand, even more so. A. vital B. available C. specific D. similar 4. (2017·绍兴模拟)The directions for operating this machine were sothat we could not understand. A. various B. different C. fundamental D. complex 5. He accidentallyhe had quarreled with his wife and that he hadn’t been home for a couple of weeks. A. let out B. took care C. made sure D. made out 6. (2017·盐城模拟)A recent study suggests that teenagers who switch off the TV and sit down to family meals are lessto suffer from eating disorders. A. likely B. possible C. probable D. sure Ⅱ. 用所给词的适当形式填空 | 
