英语四级备考练习

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　　2015英语六级选词填空练习：视频会议

　　Questions 36 to 45 are based on the following passage.

　　Video　conferencing is nothing more than a television set or PC monitor with a camera. Through the video conferencing, not only your voice but also your face, the surroundings and any other graphic and physical　 (36) 　 can be captured and transmitted through the communication system with or without wires. Of course, when you go into the details, the technology involved is very　 (37) 　and the subject matter littered with jargon. Such as ISDN (Integrated Services Digital Network), POTS(Plain Old Telephone Service) or the 　　(38) 　　behind bandwidth, latency and is corny which are used to explain how videoconferencing works. Good people communication is 　　(39) __ in any business, and the more interaction you can achieve, the more likely it is that your 　(40) 　 will be the right ones. Videoconferencing not only allows you to speak to people in different locations, but also note　　 (41) 　　 expressions 　　　　and gestures that let you know what the other person is really thinking. Meetings are made more (42) __ by sharing documents and computer applications that a simple telephone cannot 　　(43) 　. 　　(44) , organizations are discovering the competitive advantages and the power of videoconferencing. With advances in performance, economical pricing, the ability t...

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　　2015英语四级选词填空练习：双语教育

　　EI NIno is name given to the masterious and often unpredictable change in the climate of the world.This strange __1__ happens every five to eight years.It starts in the PAacific Ocean and is thought to be caused by a failure in the trade winds(信风)，which affects the ocean currents driven by these winds. As the trade winds lessen in __2__, the ocean comperatures rise causing the Peru current flowing in form the east to warm up by as much as 5°C.

　　The warming of the ocean has far-reaching effects.The hot,humid(潮湿的)air over the ocean causes severe __3__ thunderstorms.The rainfall is increased acrossAounth American __4__ floods to Peru.In the West pacific,there are droughts affecting Australia and Indonesia.So while some parts of the world perpare for heavy rains and floods,other parts face drought,poor crops and __5__.

　　EI Nino usually lasts for about 18 months The 1982-83 EI Nino brough the most __6__weather in mordern history. Its effect was worldwide and it left more than 2,000 people dead and caused over eight billion pounds __7__ of damage.The 1990 EI Nino will __9__, but they are still not __10__ sure what leads to it or what affects how strong it will be.

　　[A] estimate

　　[B] strength

　　[C] deliberately

　　[D] notify

　　[E] tropical

　　[F] phenomenon

　　[G] stable<...