【正文】 ”多虧了這種能在白天吸熱之后以熱能形式釋放的新型材料，這個(gè)透明的聚合物膜可以應(yīng)用于許多不同的表面，如窗戶玻璃或服裝)可知，這種聚合物膜可以吸熱，此后再以熱能的形式釋放出來。故選D。 （3）考查細(xì)節(jié)理解。根據(jù)最后一段中的“Such chemicallybased storage materials, known as Solar Thermal Fuels(STF), have been developed before. ”這種以化學(xué)反應(yīng)為基礎(chǔ)的儲(chǔ)存材料，即太陽能熱燃料(STF)，以前就已經(jīng)被開發(fā)出來了，可知，STF是以化學(xué)反應(yīng)為基礎(chǔ)。故選A。 （4）考查推理判斷。根據(jù)第四段中的“But heat will disappear over time no matter how good the material around it is, so the team set up a chemical storage system that can keep the energy in a stable molecular configuration. ”但是熱量會(huì)隨著時(shí)間的推移而消失，不管周圍的物質(zhì)有多好，所以研究小組建立了一個(gè)化學(xué)儲(chǔ)存系統(tǒng)，可以將能量保持在一個(gè)穩(wěn)定的分子結(jié)構(gòu)中)可推斷，這種分子結(jié)構(gòu)的優(yōu)勢(shì)是相對(duì)穩(wěn)定。故選D。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個(gè)題型的考查，是一篇科普類閱讀，考生需要準(zhǔn)確捕捉細(xì)節(jié)信息，并根據(jù)上下文進(jìn)行邏輯推理，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(jī)) 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 used for? .. wheels. electricity.（4）What39。s the best tittle for the text? invented turbines.39。s tidal power station. power in the River Seven. old idea might be made practical.【答案】 （1）A（2）A（3）B（4）D 【解析】【分析】本文是一篇說明文，潮汐能發(fā)電站雖然計(jì)劃已久,但由于科學(xué)家的擔(dān)心,很長(zhǎng)時(shí)間以來都沒有得以實(shí)現(xiàn)。而名叫Rod Rainey的工程師最近想到了解決問題的辦法,雖然用的是過去的科技,但在輪上做了很大改進(jìn),這樣在保證海洋生物和環(huán)境安全的同時(shí)也可大量發(fā)電。 （1）考查細(xì)節(jié)理解。根據(jù)第一段中的Its tidal range, the difference in depth between high and low tides, of around 15 metres is among the largest in the world.它的潮汐差,即最低和最高潮汐的深度差,是大約15米,位居世界首位?？芍?the mouth of the River Severn最大的特點(diǎn)就是潮汐差很大。故選A。 （2）考查推理判斷。根據(jù)第二段中的Engineers and governments have been toying with the idea since at least 1925.和最后一段中的Environmentalists also worry that any plant would change the tides, making life harder for wildlife.可知,工程師對(duì)潮汐電站的想法漫不經(jīng)心,環(huán)境主義者擔(dān)心它會(huì)給海洋生物帶來危險(xiǎn),所以最初人們對(duì)潮汐發(fā)電站都是不支持的。故選A。 （3）考查細(xì)節(jié)理解。根據(jù)最后一段中的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.可知,locks的主要作用是提供一條比巴拿馬運(yùn)河寬一倍的水上運(yùn)輸渠道,保證上游的港口能夠正常運(yùn)行。故選B。 （4）考查主旨大意。縱觀全文可知,文章主要講Rod Rainey用古老的方法代替?zhèn)鹘y(tǒng)的輪機(jī)進(jìn)行潮汐發(fā)電,打破River Severn不適宜潮汐發(fā)電的舊思想。故選D。 【點(diǎn)評(píng)】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷和主旨大意三個(gè)題型的考查，是一篇科技類閱讀，要求考生在捕捉細(xì)節(jié)信息的基礎(chǔ)上，進(jìn)一步根據(jù)上下文的邏輯關(guān)系，進(jìn)行分析，推理，概括和歸納，從而選出正確答案。8．閱讀理解 Benefits and Problems of Genetic Engineering Plant breeding is the science of changing the characteristics of plants in order to produce desired ones. Genes in a plant are what determine what type of characteristics it will have. Plant breeders try to create a specific oute of plants and potentially new plant varieties by changing the genes of the plants through breeding, which is making new plants from parents of different varieties or species. Actually, plant breeding has been practiced for thousands of years, since near the beginning of human civilization. It is practiced worldwide by individuals such as gardeners and farmers and by professional plant breeders employed by organizations such as government institutions, universities, cropspecific industry associations or research centers. They have crossbred plants to create the new types of plants that are, for example, bigger, stronger, or more attractive. Crossbreeding can take such a long time, however, and it is inaccurate. Now, we can change exact sections of Deoxyribonucleic acid (DNA), so the process is more accurate and faster. But people all over the world are arguing about its benefits and disadvantages. Some people use the technology to produce desired characteristics of plants and animals. Other people are concerned that the genetically engineered plants may harm the environment and worried that they may be dangerous for people to eat. There are many reasons for changing plants in this way. International development agencies believe that breeding new crops is important for ensuring food security by developing new varieties that are higher yielding(高產(chǎn)的), disease resistant, drought tolerant or regionally adapted to different environments and growing conditions. For example, some genetically engineered plants can live through frost or draught. As a result, famer