【正文】 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. 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. 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，推理判斷和主旨大意三個題型的考查，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?？v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B。 （3）考查細(xì)節(jié)理解。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,工程師對潮汐電站的想法漫不經(jīng)心,環(huán)境主義者擔(dān)心它會給海洋生物帶來危險,所以最初人們對潮汐發(fā)電站都是不支持的。故選A。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。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)境安全的同時也可大量發(fā)電。s the best tittle for the text? invented turbines.39。Its power plant makes life harder for wildlife.（2）What was people39。It has the largest tidal range in the world.C.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. 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). 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. 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解和推理判斷兩個題型的考查，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。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. ”但是熱量會隨著時間的推移而消失，不管周圍的物質(zhì)有多好，所以研究小組建立了一個化學(xué)儲存系統(tǒng)，可以將能量保持在一個穩(wěn)定的分子結(jié)構(gòu)中)可推斷，這種分子結(jié)構(gòu)的優(yōu)勢是相對穩(wěn)定。故選A。 （3）考查細(xì)節(jié)理解。根據(jù)第二段中的“thanks to a new material that can store solar energy during the day and release it later as heat. This transparent polymer film could be applied to many different surfaces, such as window glass or clothing. ”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C。s energy and then releases it as heat to make the ice on the windshield disappear. ”想象一下你的衣服可以釋放足夠的熱量讓你溫暖和舒適，讓你可以在冰冷的房間里保持舒適。 （1）考查推理判斷。Such chemicallybased storage materials, known as Solar Thermal Fuels(STF), have been developed before. But those earlier efforts were designed to be used in liquid solutions and not able to make durable (耐用的) solidstate films. The new approach is the first based on a solidstate material, in this case a polymer, and the first based on inexpensive materials and widespread production technology.（1）What is the main purpose of Paragraph 1? show the main idea of the passage. practice readers39。 s energy through a chemical reaction and releasing it later as heat. According to a team of researchers at MIT, both cases may be possible before long, thanks to a new material that can store solar energy during the day and release it later as heat. This transparent polymer film could be applied to many different surfaces, such as window glass or clothing.Imagine your clothing could release enough heat to keep you warm and cozy, allowing you to stay fortable in a cooler room. Or, picture a car windshield that stores the sun39。 【點(diǎn)評】本題考點(diǎn)涉及細(xì)節(jié)理解，詞義猜測，推理判斷和段落大意四個題型的考查，是一篇科研類閱讀，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?？v觀全文可知，本文介紹了一項(xiàng)科學(xué)研究的研究成果，所以該文章最有可能出現(xiàn)在“技術(shù)與科學(xué)”版塊。故選B。 （3）考查細(xì)節(jié)理解。根據(jù)常識可知，在大自然中散步對人體有各種各樣的好處，再結(jié)合句中出現(xiàn)的“relieving other mood disorders(緩解其他情緒紊亂)”不難推斷出， batting depression應(yīng)表示“減輕抑郁”。“Researchers …surveyed 149 respondents aged 21 o 65 about the proportion of green space in their neighborhood…”研究人員調(diào)查了年齡在21~65歲之間的149名參與者小區(qū)內(nèi)的綠植比例……；以及“The study also asked questions about experiences with depression and anxiety…”研究中還問了與抑郁及焦慮有關(guān)的問題……等可知，第二段主要介紹了新研究的調(diào)查內(nèi)容，故選D。 （1）考查段落大意。s risk of developing mental health problems as an adult.（1）What does the second paragraph mainly talk about? results of the new study. purpose of the new study. significance of the new study. content of the new study.（2）What does the underlined word batting in paragraph 4 probably mean? ...（3）Accordin