1、【 精品教育资源文库 】 Unit 4 Global warming .阅读理解 Would it surprise you to learn that,like animals,trees communicate with each other and pass on their wealth to the next generation? UBC Professor Simard explains how trees are much more complex than most of us ever imagined.Although Charles Darwin thought th
2、at trees are competing for survival of the fittest,Simard shows just how wrong he was.In fact,the opposite is true:trees survive through their co-operation and support,passing around necessary nutrition “depending on who nee ds it”. Nitrogen (氮 ) and carbon are shared through miles of underground fu
3、ngi(真菌 ) networks,making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy.This hidden system works in a very similar way to the networks of neurons (神经元 ) in our brains,and when one tree is destroyed,it affects all. Simard talks abou
4、t “mother trees”,usually the largest and oldest plants on which all other trees depend.She explains how dying trees pass on the wealth to the next generation,transporting important minerals to young trees so they may continue to grow.When humans cut down “mother trees” with no awareness of these hig
5、hly complex “tree societies” or the networks on which they feed,we are reducing the chances of survival for the entire forest. “We didnt take any notice of it,” Simard says sadly.“Dying trees move nutrition into the young trees before dying,but we never give them a chance.” If we could put across th
6、e message to the forestry industry,we could make a huge difference towards our environmental protection efforts for the future. 【语篇导读】本文是一篇说明文 ,主要介绍了树和树之间不是你死我活的竞争关系 ,而是相互依赖的互助关系。快要死的树会将自己的营养传给小树让它们更好地成长。如果人们知道这些现象 ,就可以更好地保护这些树。 1.What would be the best title for the passage? A.Old Trees Communicate
7、 Like Humans B.Young Trees Are In Need Of Protection C.Trees Are More Complex Than You Think D.Trees Contribute To Our Society 答案 C 解析 标题概括题。结合全文内容可知 ,文章介绍了树和树之间不是你死我活的竞争关系 ,而是相互依赖的互助关系。快要死的树会将自己的营养传给小树让它们更好地成长 ,所以树木比我们想象的更复杂。 C 项适合做标题。故选 C 项。 【 精品教育资源文库 】 2.In Simards opin ion,trees . A.depend on
8、each other B.protect their own wealth C.compete for survival D.provide support for dying trees 答案 A 解析 细节理解题。根据第二段最后一句可知 ,树与树之间的关系是互相依赖的。故选 A 项。 3.We can learn from the passage that . A.“mother trees” are usually of no use to oth er trees. B.Charles Darwin had the same thought as Simard C.people kno
9、w much about the complex “tree societies” D.if “mother trees” are cut down,the survival for the entire forest will be affected 答案 D 解析 推理判断题。根据第四段第三句可推断出 ,砍掉 “ 母亲树 ” 会影响整片森林的生存状况。故选D 项。 4.The underlined word “it” in the last paragraph refers to . A.how trees grow old B.how “tree societies” work C.ho
10、w forestry industry develops D.how young trees survive 答案 B 解析 代词指代题。画线词出现在第五段段首 ,所以应该到上一段段末寻找 it 所指代的内容。上段最后一句指出 ,砍掉 “ 母亲树 ” 会影响整片森林的生存状况 ,可推断出 ,it 指的是 “ 树的社会 ” 是 如何运转的。故选 B 项。 ? 导学号 29402131? .七选五 Feeling both positive and negative emotions is a natural part of being human.We might use the word “n
11、egative” to describe difficult emotions,but it doesnt mean those emotions are bad or we shouldnt have them.Still,most peo ple would probably rather feel a positive emotion than a negative one.1. What matters is how our emotions are balanced how much of each type of emotion,positive or negative,we ex
12、perience. Negative emotions warn us of threats or challenges that we may need to deal with.For example,fear can make us aware of possible danger.2. Angry feelings warn us that someone is stepping on our toes,crossing a boundary,or losing our trust.Anger can be a signal that we might need to act on o
13、ur own behalf. 【 精品教育资源文库 】 Negative emotions focus our awareness.3. But too many negative emotions can make us feel anxious,exhausted,or stressed out.When negative emotions are out of balance,problems might seem too big to handle. Positive emotions balance out negative ones,and they have other pow
14、erful benefits,too.Instead of narrowing our focus like negative emotions do,positive emotions affect our brains in ways that increase our awareness,attention,and memory.They help us take in more information and hold several ideas in mind at once.4. When positive emotions open us up to new possibilit
15、ies,we are more able to learn and build on our skills.5. A.What helps you feel confident? B.That leads to doing better on tasks and tests. C.Its a signal that we might need to protect ourselves. D.They help us focus on a problem so we can deal with it. E.For example,its likely that youd prefer to fe
16、el happy instead of sad. F.And they then make us understand how different ideas relate to each other. G.Pay attention to these powerful tools and find ways to make time for them. 答案与解析 【语篇导读】本文是议论文。文章论述了消极情绪和积极情绪的作用。 1.E E 项是对上文 “Still,most people would probably rather feel a positive emotion than a
17、 negative one.” 的举例说明。 2.C 根据上文的 “.fear can make us aware of possible danger.” 可判断 ,C 项内容与之相呼应。 3.D 结合上下文可知 ,D 项是对上文 “ Negative emotions focus our awareness.” 的进一步说明。 4.F F 项与上文的 “.hold several ideas in mind at once.” 相呼应。 5.B B 项中的 That 指代上文的 “.learn and build on our skills.”, 说明积极情绪的好处。 ? 导学号 2940
18、2132? .完形填空 (2017 吉林长春一模 ) When I was just out of college,I managed to get my dream job as a trader in New York City on the floor of the American Stock(股票 ) Exchange. Though it was a proud 1 ,the job was simply too physically 2 I must stand in a crowd every day,which often 3 me in a mindset(心态 )that
19、 held me back. Manhattan is a walking town and its difficult to 4 when you have a disability.Taxis are expensive and riding the subway 5 dozens of steep steps to get below 6 .This left me only one 7 the bus. 【 精品教育资源文库 】 One night,after the 8 for my job,I was aching with self-pity 9 it started to r
20、ain on my walk to the bus stop.I became more and more 10 without an umbrella,thinking Id never 11 it in this city.Telling myself,“this city is just too hard” and “maybe it is just not possible for a guy like me”. And then,I 12 the most beautiful,short moment.A couple came rolling by on roller skates
21、,hand 13 hand as they skated what seemed like the tango.They were all wet but they saw the 14 as an opportunity and romance. I suddenly became grateful for waiting in the rain because I 15 have missed this beauty 16 if I had been in a taxi or on the subway.This,although 17 ,was an important moment o
22、n my journey to discovering the 18 of achieving health and happiness.When I change my mindset, 19 for a moment,to what is possible and work to get rid of the self-limiting beliefs that 20 my daily actions,I will be on the road to a healthier,happier life. 【语篇导读】 本文是一篇记叙文。讲述了作者工作很累 ,一次回家路上遇到下雨 ,心情沮丧
23、,看到一对夫妇在雨中溜冰的画面 ,让作者感觉到改变自己的心态就会走上一条更健康、更快乐的生活之路。 1.A.adjustment B.achievement C.agreement D.treatment 答案 B 解析 根据第一段中的 “I managed to get my dream job” 可知 ,作者毕业找到了自己理想的工作 ,可知这份工作是作者引以为傲的成就。 adjustment“ 调节 ”;achievement“ 成就 ”;agreement“ 同意 ,一致 ”;treatment“ 治疗 ,对待 ” 。故选 B 项。 2.A.tiring B.boring C.relaxing D.disappointing 答案 A 解析 根据本句中 “I must stand in a crowd every day,” 可知 ,这 份工作是劳累的。 tiring“ 累人的 ,令人疲倦的 ”;boring
