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三、抓住关键词，打开解题的切入点
很多情况下，题干上会有一个关键词的提示，只要快速锁定该词，不但能找准答案，而且还能节省宝贵的时间，提高解题速度。
1.Years ago, we didn't know this， but recent science______that people who don't sleep well soon get ill.
A. showed B. has shown C. will show D.is showing
析：根据关键词“recent”判断正确答案为B。
2.The group, ____ by Tseng Yungchuan, arrived in Beijing on Wednesday to help push for Taiwan to be opened to mainland tourists.
A. leads B. leading C. led D. having led
析：根据关键词“by”判断，正确答案为C。
四、关注标点符号能快速锁定最佳选项
英语的标点符号常常是我们借以判断最佳选项的重要信号，因此，我们在审题时要特别注意它的功能，不同的标点有不同的作用。
1、--- ______ a second time, will the man have one more try ?
--- I'm sure he will.
A. Turn down B. If turning down
C. He was turned down D. If turned down
析：根据逗号 “,”的功能判断，逗号的前部分要么是从句要么是非谓语动词(短语)或独立主格，此空应用被动结构，所以答案选D。
2. _____ some exercise every day — I'm sure you'll get fit sooner or later.
A. To take B. taking C. Have taken D. Take
析：破折号“——”相当于“and”，前后结构应保持平衡，因此答案为D。
