1、Unit 4 Global warmingPeriod Warming up, Pre-reading, Reading & Comprehending一、1.The children seemed bored because the teacher (直）telling them tie same story over and over.2.With more forests being destroyed, (大量的）good soil are being washed away each year.3.With the prices (上升），we now buy less with t
2、he same amount of money.4.The problems you discussed in the history class are political (而不是）social matters.5.I wonder how it (发生）that she was hall an hour late for such an important exam.6.He ( state) his views in broad outline at the meeting yesterday.7.The show attracted a large audience, (range)
3、 from children to old people.8.Small quantities of poison (discover) in the dead mans stomach this morning.9.We (subscribe) to an evening newspaper, so you dont bother to buy one for us.10.This plan of Apple Inc. is targeting ( consume ) of that country with the new notebook.二、A rainforest is an are
4、a covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely falling below 16C. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover, these area
5、s would reflect more heat into the atmosphere, warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world.In the past hundred years, humans have begun destroying rainforests in search of three m
6、ajor resources: land for crops, wood for paper and other products, land for raising farm animals. This action affects the environment as a whole. For example, a lot of carbon dioxide in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting tr
7、ees but we will suffer much more than we will benefit.There are two main reasons for this. Firstly, when people cut down trees, generally they can only use the land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right now, but in the long run it
8、actually reduces the worlds wood supply. Rainforests are often called the worlds drugstore. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance
9、 to cure diseases lies somewhere in the worlds shrinking rainforests.1.Rainforests can help to adjust the climate because they .A.reflect more heat into the atmosphereB.bring about high rainfall throughout the worldC.rarely cause the temperature to drop lower than 16CD.absorb the heat from the sun,
10、reducing the effect of heat from the sun on the earth2.What does the underlined word “this” in the third paragraph refer to?A.We will lose much more than we can gain.B.Humans have begun destroying rainforests.C.People have a strong desire for resources.D.Much carbon dioxide comes from burning rainfo
11、rests.3.It can be inferred from the text that .A.we can get enough resources without rainforestsB.there is great medicine potential in rainforestsC.we will grow fewer kinds of crops in the gained landD.the level of annual rainfall affects wind patterns4.What might be the best title for the text?A.Ho
12、w to Save Rainforests?B.How to Protect Nature?C.Rainforests and the Environment.D.Rainforests and Medical Development.三、I would love to be happier, as Im sure most people would, so I think it will be interesting to find some ways to become a happier person.1.Exercise moreExercise has such a deep eff
13、ect on our happiness and well-being that it7s actually been proven to be an effective strategy (策略) for overcoming depression. It can also improve your body image, even if you dont lose any weight.2.Sleep moreWe know that sleep helps our bodies to recover from the day and repair themselves, and that
14、 it helps us focus and be more productive. 3.Spend time with friends and family Several studies have found that time spent with friends and family makes a big difference to how happy we feel. Almost all the other things that we think make us happy are actually just ways of getting more family and fr
15、iends.4.Go outsideSpend time in the fresh air to improve your happiness. One study found that spending 20 minutes outside in good weather not only improved our positive mood, hut broadened thinking and improved working memory.5.Help othersTo make yourself feel happier, you should help others. Spendi
16、ng money on other people makes us happier than buying stuff for ourselves. A study of volunteering showed that volunteers were affected and felt unhappy when their opportunities to help others were taken away.A.Social time is highly valuable when it comes to improving our happiness.B.People who exer
17、cise feel better about their bodies.C.It can help you lo relax and increase your brain power.D.Sleep affects our sensitivity to negative emotions.E.What about spending our time with other people?F.It turns out that sleep is also important for our happiness.G.Going outside on a nice day delivers a hu
18、ge advantage.答案以及解析一、1.答案：kept on2.答案：huge quantities of3.答案：going up4.答案：rather than5.答案：came about6.答案：stated解析：【解题思路】考查时态。句意:在昨天的会议上他粗略地讲了自己的观点。yesterday说明动作发生在过去，所以应该用stated。7.答案：ranging解析：【解题思路】考査非谓语动词。句意：表演吸引了很多 观众，从孩子到老人。range和audience有逻辑上的主谓关系，所以 用动词-ing形式。8.答案：were discovered解析：【解题思路】考査时态、语
19、态和主谓一致。句意： 今早，在死者的胃中发现有少量的毒剂。quantities of +名同作主语，谓语动词用复数，且poison与discover之间是被动关系，因此用 被动语态，结合时间状语this morning可知,discover这一动作发生在 过去，故用一般过去时。9.答案：have subscribed解析：【解题思路】考査时态。句意：我们已经订阅了一份晚报，因此你不用费心为我们买一份。根据句意可知，subscribe 这一动作发生在过去且对现在造成了影响，因此用现在完成时。10.答案：consumers解析：【解题思路】考査词形转换。句意:苹果公司这个计划 的目标就是为那个国家
20、的消费者提供这种新型笔记本电脑。根据 句意可知，所填的名词要用复数形式。二、答案：DABC解析：1. D 细节理解题。根据文章第一段中 “Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. ”判断选 D。 2. A 词义推断题。根据文章倒 数第二段内容“People obviously have a need for the resources we gain from cutting trees b
21、ut we will suffer much more than we will benefit. ”可以判断this指代上文提到的人们 从砍伐树木当中受的损失要比获得的利益多 这种情况，故选A。 3. B 推理判断题。从文章末段“ More than 25% of the medicines we use today come from plants in rainforests. ”可知人们使用的药物中有25% 是来自于热带雨林，由此判断B选项正确。 4. C 主旨大意题。文章首段提出热带雨林的定义以及对环境的影响，第二段介绍了热带 雨林的消失以及对气候的影响，第三段解释了热带雨林消失的原
22、因，由此判断本文讲述的是关于 热带雨林和环境的关系，故选C 。 三、答案：CFAGE解析：1.C【解题思路】该段谈论了锻炼的好处,C项中句子的主语k代指Exercise,意为锻炼可以帮助你放松并增强脑力，与下文It can also improve.都是谈锻炼的好处，故仏C项。2.F【解题思路】该段说明了睡觉的好处，与F项中的sleep is also important相关联。3.A【解题思路】A项中的 “Social time”指社交时间，与该段标题花时间与朋友和家人相处相一致。4.G【解题思路】G项中的Going outside on a nice day与本段小标题 Go outside 对应。5.E【解题思路】本段主要讲了要帮助他人，空前列举了把钱花在别人身上的人比花在自己身上的人更快乐，结合空后内容可知，E项 “花时间与别人在一起怎么样”能使上下文联系起来，起承上启下的作用。
