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温馨提示： 此套题为Word版，请按住Ctrl,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭Word文档返回原板块。 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. | 
