【正文】 small bit of paint crashing with a satellite can cause critical damage. Various panies have plans to send thousands of new satellites into lowEarth orbit, already the most crowded area. The RemoveDEBRIS experiment is run by a pany and researchers led by the U. K.39。s Surrey Space Center and includes Airbus, Airbusowned Surrey Satellite Technology Ltd. and France39。s ArianeGroup. Guglielmo Aglietti, the director of Surrey Space Center, said that an operational version of the RemoveDEBRlS technology would cast a net that remains fastened to the main satellite so the debris can be dragged out of orbit. It could target large pieces of junk, including dead satellites up to 10 meters long. The RemoveDEBRIS satellite will conduct a few more experiments in the ing months, including testing navigation features that could help guide the satellite to a specific piece of debris.Jonathan McDowell, an astrophysicist at the HarvardSmithsonian Center for Astrophysics, said the success of this week39。s experiment was exciting, but he cautioned against over publicizing it. There are still enormous barriers to clear before operational cleanup tasks are underway, he said, and the most discouraging is figuring out how to fund such projects. Aglietti, the Surrey professor who helped lead the RemoveDEBRIS project, said The challenge will lie in persuading the relevant authorities to sponsor these tasks. Aglietti said he hopes RemoveDEBRIS will conduct a few cleanup tasks per year, targeting the largest pieces of junk in the most crowded orbits.（1）What is the use of the RemoveDEBRIS satellite? A.Demonstrating space technology.B.Imitating a developing technique.C.Collecting wastes existing in space.D.Symbolizing great progress in space.（2）How does the RemoveDEBRlS satellite work? A.By throwing a net to take the junk from orbit.B.By fastening it to the main satellite tightly.C.By dragging satellites up to 10 meters long.D.By targeting large pieces of junk carefully.（3）What does the underlined word sponsor in the last paragraph probably mean? A.Acplish.B.Support.C.Oppose.D.Provide.（4）What39。s the best title for the text? A.The RemoveDEBRIS Project Is PerfectB.How RemoveDEBRIS Is Invented in the LabC.Why the RemoveDEBRIS Satellite Is InventedD.Satellite Collects Space Junk for the First Time【答案】 （1）C（2）A（3）B（4）D 【解析】【分析】本文是一篇說明文，介紹了“衛(wèi)星首次收集太空垃圾?！币环N名為“清除碎片”的實驗清理設(shè)備成功地在一顆虛擬衛(wèi)星周圍撒網(wǎng)，模仿一種有朝一日可能收集太空垃圾的技術(shù)。 （1）考查細節(jié)理解。根據(jù)第一段中“...,imitating a technique that could one day collect spaceborne garbage.”模仿一種有一天可以收集太空垃圾的技術(shù)?？芍瑃he RemoveDEBRIS衛(wèi)星的用途是收集太空中存在的廢物。故選C。 （2）考查推理判斷。根據(jù)第六段中的“...,said that an operational version of the RemoveDEBRlS technology would cast a net that remains fastened to the main satellite so the debris can be dragged out of orbit. It could target large pieces of junk, including dead satellites up to 10 meters long.“該公司表示，一種操作性版本的RemoveDEBRlS技術(shù)將會在主衛(wèi)星上撒網(wǎng)，這樣碎片就可以被拖出軌道。它可以瞄準大塊的垃圾，包括長達10米的報廢衛(wèi)星。”可知，RemoveDEBRlS衛(wèi)星是通過撒網(wǎng)把垃圾帶離軌道。故選A。 （3）考查詞義猜測。根據(jù)最后一段中的”Aglietti said he hopes RemoveDEBRIS will conduct a few cleanup tasks per year, targeting the largest pieces of junk in the most crowded orbits.“Aglietti說，他希望清理碎片的工作每年能進行幾次，目標是最擁擠軌道上最大的垃圾碎片?？芍疤魬?zhàn)在于說服有關(guān)當局贊助這些任務(wù)?！笨芍?，劃線詞的意思是“支持”。故選B。 （4）考查主旨大意。根據(jù)第二段中的”The test, which was carried out this week, is widely believed to be the first successful demonstration of space cleanup technology, experts told CNN. And it symbolizes an early step toward solving what has already been a critical issue: junk in space.“專家告訴CNN，本周進行的這次測試被廣泛認為是太空清潔技術(shù)的首次成功演示。它象征著解決太空垃圾這一關(guān)鍵問題的第一步。可知，本文主題是“衛(wèi)星首次收集太空垃圾”。故選D。 【點評】本題考點涉及細節(jié)理解，推理判斷，詞義猜測和主旨大意四個題型的考查，是一篇科技類閱讀，要求考生在捕捉細節(jié)信息的基礎(chǔ)上，進一步根據(jù)上下文的邏輯關(guān)系，進行分析，推理，概括和歸納，從而選出正確答案。7．閱讀理解 Compared with solar and wind energy, which are booming, tidal (潮汐的) power is a loser in the clean energy petition. But if you did want to build a tidal power station, there are few better sites than the mouth of the River Severn, in Britain. Its tidal range, the difference in depth between high and low tides, of around 15 metres is among the largest in the world. Engineers and governments have been toying with the idea since at least 1925. But none of the suggested projects has materialised. Price is one objection. A study thought that tidal energy might cost between ￡216 and ￡368 ($306 521) per MWh of electricity by 2025, pared with ￡58 75 for seagoing wind turbines (輪機) and ￡55 76 for solar panels. Environmentalists also worry that any plant would change the tides, making life harder for wildlife. An engineer called Rod Rainey thinks he has a way around both problems. He plans to replace the conventional turbines of previous plans with a much older technology. Specifically, he plans to span (橫跨) the river mouth with a line of water wheels. This is a design that dates back to the early days of the Industrial Revolution. Examples can be found fixed to the sides of old watermills (水磨). But there would be nothing old fashioned about Mr Rainey39。s wheels. Thirty metres high and sixty wide, they would be made from ordinary steel. Two hundred and fifty of them, along with the supporting structures, would be floated into place and secured to the seabed, creating a line 15km long. Together, they could supply power at an avenge ate of 4GW. That is about as much as two biggish nuclear power stations would manage. Substituting one of the wheels with a set of locks would provide a shipping channel about twice the width of Panama Canal, permitting upstream ports such as Avonmouth and Cardiff to continue operating.（1）What is special about the mouth of the River Seven? A.The tidal range there is about 15 meters.B.It has the largest tidal range in the world.C.The tidal power station has been built there.D.Its power plant makes life harder for wildlife.（2）What was people39。s initial attitude towards tidal power? ....（3）What are the locks