2013’必威体育精装版高考语法填空精练.ppt

2013’必威体育精装版高考语法填空精练.ppt

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2013’必威体育精装版高考语法填空精练2013’必威体育精装版高考语法填空精练

2013’ 必威体育精装版语法填空精练 2013年5月华南师大附中三模 Why don’t birds get lost on their long flights from one place to another? Not long ago, experiments showed that birds rely 16 the sun to guide them during daylight hours. But what about birds 17 fly by night? Tests with artificial stars have proved that certain night flying birds are able to follow the stars in their long-distance flights. A dove had spent its lifetime in a cage and had never flown under a 18 (nature) sky. Yet 19 showed an inborn ability to use the stars for guidance. The bird’s cage 20 (place) under an artificial star-filled sky. The bird tried to fly in the same direction as that 21 (take) by his outdoor cousins. Any change in the position of the make-believe stars caused 22 change in the direction of his flight. Scientists think that doves, when 23 (fly) in daylight, use the sun for guidance. But the stars are apparently their principal means of navigation. What do they do 24 the stars are hidden by clouds? Apparently, they find their way by such landmarks as mountain ranges, coastlines, and river courses. But when it’s too dark to see these, the doves circle 25 (help), unable to get their position. 16. on 17. that / which 18. natural 19. it 20. was placed 21. taken 22. a 23. flying 24. when/if 25. helplessly WeChat was launched on Jan 12, 2011, and took more than a year 16 (draw) 100 million users. By September,2012, it 17 (reach) the 200 million mark, Tencent said. The number of people 18 (use) WeChat, a voice-messaging service developed by the Internet giant Tencent Holdings, has hit 300 million in the less than two years 19 the service was released, the Shenzhen-based company said on Wednesday. The 300 million number is 20 milestone for WeChat, and we hope the service will be ready to perform 21 the global stage in 2013, Pony Ma, Tencent chairman and chief executive officer, said on his microblog on Wednesday morning. 珠海2013年二模 Th

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