1、【 精品教育资源文库 】 Unit 2 The environment 一、阅读理解。 Vinegar makes salad, fries and dumplings taste better, and you can even use it to clean your windows. And now, according to scientists, it may even the planets population survive climate change. Researchers from the RIKEN Center for Sustainable Resource S
2、cience (CSRS) in Japan found that growing plants in vinegar makes them more resistant to droughts. This could mean that in the future, worries about climate change affecting the worlds supply of food will be much lower. The discovery was made after the researchers studied the Arabidopsis, a plant kn
3、own for its ability to survive in dry weather. It was found that when the plant was placed in drought-like conditions, it produced a chemical called acetate（醋酸盐） the main component of vinegar. After discovering this, the scientists experimented further by adding acetate to the soil of other plants,
4、before they stopped giving them water completely. After leaving the plants for 14 days, they found that the ones treated with acetate had survived, while the untreated plants had dried up and died. Its hoped that this simple method of survival could soon be used to help farmers in dry countries keep
5、 their crops alive. “In the experiment, we targeted the staple foods of the world rice, wheat and maize and the basic plant of breeding species, rapeseed（油菜籽） ,“ Jong Myong Kim, co-author of the study, told Popular Science magazine. Kim also told the magazine hes already been in touch with people al
6、l over the world who are interested in trying this simple and cost-effective method out for themselves from flower growing companies to amateur gardeners. Although at this point keeping thirsty plants alive isnt as easy as just pouring vinegar over them, Kim said he and his team are working on makin
7、g the process as simple as possible. “Now we are trying to cooperate with some farmers, and also some companies, to make a method to apply this system, “he said. And for those of us who always forget to ask our 【 精品教育资源文库 】 neighbors to water our plants when we go away, hopefully this means the end
8、 of returning home from a trip to find our favorite flowers have died. 1.What is the article mainly about? A. The worlds food supply will be increased. B. Plants better survive droughts. C. The Arabidopsis is resistant to droughts. D. Vinegar could be used to fight droughts. 2.It was discovered that
9、 acetate can . A. be used by farmers to replace soil B. only be produced by the Arabidopsis C. help plants survive dry conditions D. be used to improve poor soil 3.What are the target plants of the experiment? A. all breeding species. B. wheat and Arabidopisis. C. rice and maize. D. rapeseed and Ara
10、bidopisis. 4.Jong Myong Kims experiment of trying out the method . A. can make peoples trips pleasant B. turned out a worldwide success C. is as simple as pouring vinegar over the plants D. appeals to many flower growing companies 【文章大意】 本文属于科普类文章。醋不仅使食物味道更好，还可以用它来清洁你的窗户。研究发现醋中生长的植物，使它们更耐干旱。 1.D 【解析
11、】主旨大意题。通读全文可知本文主要讲述了醋能让植物在干旱的环境中生存，即能抗击干旱，故选 D。 3.C 【解析 】细节理解题。根据第四段中的 “In the experiment, we targeted the staple 【 精品教育资源文库 】 foods of the world rice, wheat and maize and the basic plant of breeding species, rapeseed,” 可知在实验中，主要针对大米，小麦和玉米等。故选 C。 4.D 【解析】推理判断题。根据最后一段中的第一句 “Kim?hes already been in t
12、ouch with people all over the world who are interested in trying this simple and cost-effective method out for themselves from flower growing companies to amateur gardeners” 分析本句可知 Kim已与对此感兴趣的花卉种植公司联系，也就是吸引这些公司。故选 D。 二、单项填空 1.After a long _, the bill was passed by the House of the Commons. A. argue
13、B. debate C. discuss D. quarrel 【答案】 B 【解析】 argue 争论， 争吵， 讨论； debate(正式的 )辩论， 讨论， 常以表决结束； discussion 讨论， 议论； quarrel 争吵。 debate 指在公众集会或会议上的辩论或讨论，通常以表决的方式结束。句意：经过长时间 的辩论，那项议案被下议院通过了。 2.It is my _ to check that all doors and windows are locked after everybody leaves . A. doubt B. poster C. responsibil
14、ity D. evidence 【答案】 C 【解析】 doubt 怀疑； poster 海报； responsibility 责任； evidence 证据。句意：在大家都离开后，我们有责 任检查门窗有没有锁好。 3.Surely there is a better way to manage the _ that arise when humans and their domestic animals move into areas that have long served as habitat for wildlife. A. concepts B. conflicts C. cons
15、equences D. credits 【答案】 B 【 精品教育资源文库 】 【解析】 concepts 概念； conflicts 冲突； consequences 后果，结果； credits 信誉，信用， 金融 贷款，荣誉， 学分。句意：当然，当人类带着他们的家畜，搬到长久以来一直属于野生动物栖息地后所产生的 冲突 ，应该有更好的方法去解决。 4.I realized strength and courage arent always _ in medals and victories, but in the efforts we make. A. measured B. prais
16、ed C. tested D. increased 【答案】 A 【解析】 be measured in 用?来衡量。句意：我意识到力量与勇气并不总是以奖牌和胜利来衡量的，而是 用我们付出的努力来衡量的。故选 A。 5.This factory produced much dirty water, which resulted in a wide _ of environmental problems. A. branch B. range C. species D. wave 【答案】 B 【解析】 branch 部门； range 范围； species 物种； wave 波浪。 a ra
17、nge of 一系列。句意：这家工厂产生了大 量的污水，导致了一系列的环境问题。 6.I appreciate _ the opportunity to work in your company two years ago. A. giving B. to give C. being given D. to be given 【答案】 C 【解析】句意：两年前得到在你的公司工作的机会，我对此非常感激。 appreciate 表示 “ 感激 ”， 其后通常 接动名词作宾语，而且动词 give 与其逻辑主语为被动关系。 7.In recent years, in many Western coun
18、tries, _ in the USA and the UK, Halloween has become a special occasion. A. in general B. in brief C. in short D. in particular 【 精品教育资源文库 】 【答案】 D 【解析】句意：近年来，在许多西方国家，尤其是在美国和英国，万圣节前夕已经成为一种特殊的场合。 in general 总的说来，通常； in brief 简言之； in short 总之，简而言之； in particular 尤其，特别。 8.Water can _ and release a lot
19、 of heat without big changes in temperature ， thus creating a stable environment. A. take B. absorb C. adapt D. adopt 【答案】 B 【解析】 take 带走； absorb 吸收； adapt 适应； adopt 采用。句意：水可以吸收和释放大量的热量而不发生 大的温度变化，从而创造一个稳定的环境。 9.Now not only are many businessmen willing to cut back on the production of vehicles，but
20、the public also reduce the use of cars. A. cut off B. cut down C. cut up D. cut back on 【答案】 D 【解析】 cut off 切断； cut down 砍倒； cut up 切碎； cut back on 削减。句意：现在不仅很多商业界人士乐意 减少车辆的产量，公众也减少汽车的使用。 10.The people in the war area have _ food. They are in a very difficult situation. A. run out B. used up C. been
21、 run out of D. been used up 【答案】 B 【解析】 run out 用完，耗尽； use up 用完，耗尽；因为这里是人做主语，所以用完某物不用被动语态； use up sth.=run out of sth：某人用完某物。故选 B 项。句意：战区的人们已经用完了食物，他们的处 【 精品教育资源文库 】 境很难。 11.There were so many people in the hall then that I could hardly _ my sister. A. bring out B. turn out C. pick out D. call out
22、 【答案】 C 【解析】 bring out 使?显露； turn out 结果是； pick out 辨认； call out 大声叫喊。句意：当时大厅里有那 么多的人，我几乎分辩不出谁是我的妹妹了。 12.Smiling, more often than not, is a good way to avoid any possible _ in our daily life. A. explanation B. debate C. fault D. conflict 【答案】 D 【解析】 explanation 解释； debate 辩论； fault 错误； conflict 冲突。句意：在我们的日常生活中，微笑通常 是一种能避免任何可能的冲突
