1、Unit 5 Revealing nature课时作业(三)Developing ideas & Presenting ideas必备知识基础练进阶训练第一层.单词拼写1I could _ (察觉) a certain sadness in the old mans face.2The _ (根) of the tree are strong and deep in the earth.3Television stations around the world are _ (连接) by satellites.4The flower grows about two _ (厘米) every d
2、ay.5There is a famous Greek m_ (神话) in which Icarus flies too near to the Sun.6This is a nice folk l_ (传说，传奇) , expressing the beautiful dream of geologists.7Especially the pollution that chemical _ (农药) causes to the environment is serious.短语填空communicate with, amounts of, drive.away, link .to.，sha
3、re.with.，side by side1A subway line will _ the airport _ the city centre.2He was so generous that he donated _ money to charities.3Parents sometimes find it difficult to _ their teenage children.4All our members work _ to fight pollution.5When she studied abroad, she _ a house _ three other students
4、.6He was cruel because he wanted to _ me _.单句语法填空1Many forms of cancer can be cured if _ (detect) early.2_(surprising) , she didnt feel regretful about her actions. 3.He smiles and nods，_(indicate) that everything is fine.4Large amounts of money _ (spend) on the building.5There is _ little water in
5、the glass that I cant drink any more.6When plants _(attack) by insects, they can release chemicals.7Her sudden arrival prevented him from _(go) out.8It _(report) that some other wild animals are kept and studied at the research center.9Some birth defects are linked _smoking during pregnancy.10How of
6、ten do you communicate _others?.课文语法填空In some legends and stories, we have seen some mysterious talking plants, which can give advice and warnings to people. It was said that Alexander the Great and Marco Polo 1._ (visit) such a tree in India. In modern movie Avatar, trees can communicate with anima
7、ls and people. With us long 2._ (believe) that talking plants are fantasy, recent research has revealed something amazing: plants appear to be able to communicate after all. When some plants 3._ (attack) by insects, they send chemicals 4._ (communicate) with each other. The chemicals are regarded as
8、 signals of warning or calls for help. When another plant detects the chemicals from its injured neighbour，it starts to release its own different chemicals，some of 5._ drive the insects away. Scientists hope to learn more about this plant warning system, so that they can use it to grow crops without
9、 pesticides. More 6._ (surprising) , plants also use sound to communicate. Some plants make noises with their roots. Some trees make clicking noises when there is not enough water, 7._ (indicate) drought is arriving. Plants also have an amazing system of 8._ (communicate) that can link nearly all th
10、e plants in a forest. Through the system, plants can share information and even food 9._ each other as well as steal food or spread poisons to attack other plants. Scientists hope to learn how to create a “firewall” to help prevent these attacks. Maybe one day we will know enough 10._ plant communic
11、ation.关键能力提升练进阶训练第二层.阅读During most time of the 1930s, the Great Plains region was destroyed by drought and high winds. Howling across the Great Plains, these winds swept up the soil of the overfarmed land and created serious sandstorms of dust. These black sandstorms were so thick that daylight seem
12、ed more like dusk. Year after year having passed without rain, the winds continued to blow, and the dust swirled endlessly. During this terrible period, the region came to be called the Dust Bowl. But the causes of the sandstorms werent just drought and winds. In a strange way, patriotism (爱国主义) was
13、 partly to blame. During World War I, the US government encouraged farmers to support the war by planting more wheat. As farmers increased their production, their own profits increased. Following the invention of the farm tractor, farmers plowed_up thousands of acres of grassland and planted wheat.
14、Wheat production rose fast, but nature soon turned success into disaster. When the drought began, farmers didnt realise that, by plowing up the grassland, they had destroyed the lands natural protection against soil erosion (侵蚀). As the drought continued, one powerful windstorm after another blew ac
15、ross the Great Plains. Crops dried up and were blown away. Nothing grew for years. Eventually most of the rich topsoil (表土层) was blown away. As years passed, all the moisture (水分) in the ground disappeared, leaving even the deep roots of trees in dust. The Great Plains became a deserted place, as th
16、ousands of people fled to California to escape the dust and look for work. Most found only lowpaying agricultural jobs. But there were those who refused to leave. For these farmers, a programme encouraged them to make use of new ways that would protect the precious topsoil from eroding. But bringing
17、 the soil back to life took time, and the farmers still needed rain. Rain meant more to the farmers than it ever had before. It meant a future.1Which of the following is the main cause of turning the Great Plains into the Dust Bowl? AThe land was overfarmed. BThe high winds blew away good soil. CThe
18、re was lasting drought for years. DThere were many thick black sandstorms.2What does the underlined phrase in the second paragraph mean? AShow up the grassland for farming. BOpen up the grassland for farming. CGive up the grassland for farming. DGive out the grassland to the farmers.3How is the thir
19、d paragraph mainly developed?ABy the time order.BBy giving examples.CBy exploring causes and effects.DBy explaining the process.4What is mainly discussed in the last two paragraphs?AMeasures to be taken.BFuture of the destroyed region.CResults of the disaster.DPeoples reaction to the disaster.七选五How
20、 to Grow Houseplants Have you ever killed a beautiful houseplant? Are you still killing beautiful houseplants? _1_Well, look no further, just follow these stepbystep instructions and your plant killing days will be over.First of all, buy an easytogrow plant that can survive you. If you need a desert
21、 cactus (仙人掌) for a starter plant, then thats fine._2_ Next, make sure your plant gets enough sunlight. _3_ The window will act as a prism (棱镜) and fry your plant. What you need to do is have a window with a light curtain. It should be transparent (透明的). In that way your plant gets its needed sunlig
22、ht and it wont be destroyed._4_ If you give it the amount of water for a different plant, you could overwater or underwater it. If you know that everything needs water to survive, thats great. But you must also know that if you give something too much water you will kill it. Same thing goes for plan
23、ts. Finally, you will need to prune(修剪) your plant weekly. If you dont, then the plant might become unhealthy or unattractive, and sometimes even both. You could use tools or your hands. _5_ This makes for a great fertiliser, too, and then you wont have to buy fertiliser at the store!ANot everyone h
24、as a gift for growing plants.BHowever, never place it next to a glass window.CAre you looking for a way to solve your problem?DWater your plant as instructed for that specific plant.EDoes it prefer bright light and ordinary room temperatures?FJust make sure you have a plant that you know you can tak
25、e care of.GWhen you remove the dead leaves from your plant, put them in the soil.完形填空I lived closely related to the weather. It is surprising how you _1_ it when you live in the wilderness. Not a cloud passed _2_， not a wind blew untested (不被检视). When the winds changed and the air _3_ like snow, I w
26、ould stay in my tree house, because I had gotten lost in a _4_ one afternoon. That day the storm was so strong that I could not push against that. However, that _5_ me to stay home when the air said “snow”. Not that I was afraid of being _6_ far from home in a storm, for I could find food and shelte
27、r and make a fire anywhere, _7_ I had become as attached to my tree house as a hatching (孵蛋的) bird to her nest. Caught out in the storms and bad weather, I had an urgent _8_to return to my tree house, even as the deer to their bushes: We all had our little _9_ in the wilderness. We all fought to ret
28、urn there. When you dont have a newspaper or radio to give you the _10_ forecast, watch the birds and animals. They can _11_ when a storm is coming. When the nuthatch (五子雀) holed up, I _12_ up，lit my light, and sat by my fire learning new tunes on my reed whistle. I was now really into the _13_ of w
29、inter, and quite attracted by its _14_. There is no such thing as a still winter night. Not only are many animals _15_ around in the freezing cold，but the trees cry out and branches break and fall, and the wind gets caught in a valley and screams until it dies.1. Awatch Bknow Chear Dtell2A.uncovered
30、 Bunexpected Cunnoticed Duntouched3. Alooked Bsmelled Csounded Dsaw4. Arain Bstorm Csnow Dwind5. Aheard Btaught Cdrove Dinsisted6A.found Bcaught Chunt Dmissed7A.until Bbut Cthat Dsince8A.love Bsituation Cdemand Ddesire9A.place Bhome Ctree Dnest10A.news Banimal Cweather Ddanger11A.remind Bexplore Cli
31、e Dtell12A.holed Bturned Clooked Dput13A.teeth Bface Cfoot Dback14A.view Bactivity Cgames Dsteps15A.running Blying Chiding Dsleeping.语法填空Writing is important for us because it can express what we think and show our ability to use language. The writing ability is greatly required in most workplaces.
32、Therefore，we should attach great importance to it. Many students want to know 1._ to improve their writing. Here 2._ (be) some suggestions about being a successful writer. First of all，you should be equipped with knowledge and read a variety of 3._ (book). Youd better analyze those famous writers wr
33、iting structure，grammar and expressions and try your best to learn 4._ them.Just as 5._ wellknown proverb (谚语) goes，practice makes perfect. It would be 6._ (use) for you to write something every day and then ask for suggestions from your teachers. You should try to correct your mistakes carefully an
34、d rewrite the article once more. You can learn much from your mistakes and improve your writing 7._ (gradual). The more you read and write, the 8._ (good) your writing will be. It is necessary for you 9._ (keep) writing. And only by 10._ (follow) these suggestions above can you improve your ability
35、to write.课时作业(三)Developing ideas & Presenting ideas必备知识基础练.单词拼写1detect2.roots3.linked4.centimetres5.myth6.legend7pesticide.短语填空1link；to2.amounts ofmunicate with4.side by side5shared; with6.drive; away.单句语法填空1detected2.Surprisingly3.indicating4.were spent5.so6are attacked7.going8.is reported9.to/with
36、10.with.课文语法填空1答案与解析：had visited考查动词的时态。本句的谓语动词was said发生在过去，此处visit发生在谓语动词之前，即“过去的过去”，故用过去完成时。2答案与解析：believing考查with复合结构。with后面的宾语us和动词believe之间是主动关系，故用v.ing形式。3答案与解析：are attacked考查动词的时态和语态。陈述事实，用一般现在时；主语plants和动词attack之间是被动关系，故用一般现在时的被动语态。4答案与解析：to communicate考查非谓语动词。放出化学物质是为了彼此沟通，此处表示目的，故用不定式。5答案
37、与解析：which考查定语从句。此处是定语从句，先行词是chemicals，表示物，引导词在介词of后面，故用which。6答案与解析：surprisingly考查副词的用法。在句中作状语，用副词形式。7答案与解析：indicating考查非谓语动词。此处表示自然而然的结果，故用现在分词作结果状语。8答案与解析：communication考查名词的用法。在介词of后面，用名词形式。9答案与解析：with考查固定搭配。share.with.是固定搭配，意为“和分享”。10答案与解析：about考查介词的用法。此处指了解更多关于植物交流的事情，故用介词about。关键能力提升练.阅读【语篇解读】本
38、文是一篇说明文。介绍了20世纪30年代，美国大平原地区由于过度开垦而产生了一系列环境问题，使得这片曾经的沃土沦为一片荒地。1答案与解析：A细节理解题。根据第一段中的“.these winds swept up the soil of the overfarmed land and created serious sandstorms of dust. called the Dust Bowl.”可知，过度开垦使大风卷走了土壤，形成了严重的沙尘暴，把大平原变成了“灰碗”，故选A项。2答案与解析：B词义猜测题。根据画线词后的“thousands of acres of grassland and
39、planted wheat”可知，随着农用拖拉机的发明，农民开垦了数千英亩的草地，种上了小麦，由此可知画线词是指“开垦草地来种小麦”，故选B项。3答案与解析：C推理判断题。根据第三段内容可知plowing up the grasslanddestroyed the lands natural protection against soil erosionCrops dried up and were blown away为因果关系，因此本段是以探究原因和结果的方法展开的，故选C项。4答案与解析：C主旨大意题。通读最后两段内容可知，最后两段分别从环境和人类生存两个方面介绍了美国大平原地区被过度开
40、垦后所产生的一系列后果，故选C项。.七选五【语篇解读】本文是一篇说明文。文章提出了几条关于如何养室内植物的建议。1答案与解析：C下文中的“these stepbystep instructions”与C项中的“a way to solve your problem”相呼应。2答案与解析：FF项中的“a plantyou can take care of.”与本段建议的“buy an easytogrow plant that can survive you”相呼应。3答案与解析：B根据设空后的“The windowfry your plant.”和“have a window with a l
41、ight curtain”可知，不要把植物放在玻璃窗户旁边。4答案与解析：D根据本段下文提到的给不同植物浇一样多的水的危害可知，应根据植物的种类来浇水。5答案与解析：G根据上文的“prune your plant”和结尾的“This makes for a great fertiliser”可知，修剪的植物枯叶埋到土里可成为肥料。.完形填空【语篇解读】本文是一篇说明文。作者主要讲述了自己在没有现代化天气预报手段的野外如何观察并预测天气，享受原生态的自然生活。1答案与解析：A通读全文，作者主要是在讲述自己在没有现代化天气预报手段的野外如何观察并预测天气；又根据第三段第一句“When you do
42、nt have a newspaper or radio to give you the _ forecast, watch the birds and animals.”可知，本题应该是讲观察(watch)天气，it指上文提及的天气。2答案与解析：C上文说，在野外生活，观察天气是件很令人惊奇的事。因此可推断，在观察天气时，大自然的每一点蛛丝马迹都不能被忽略(unnoticed)。uncovered裸露的；unexpected意外的；untouched未受影响的。3答案与解析：B由句意可知，当风变了，空气中弥漫着雪的气息(smell)时，“我”就会(乖乖地)待在树屋里。注意：这里的smell意
43、思为“弥漫着/散发着的气味”。4答案与解析：B这句话是说明自己在下雪前乖乖待在树上的原因，因为“我”曾有过惨痛经历有一天下午在暴风雨(storm)中迷了路。下文中有storm这个词作为提示。5答案与解析：B然而，这件事教会了(teach)“我”要乖乖待在家里，当空气预言要下雪的时候。6答案与解析：B“我”并不是害怕在暴风雨中被困(catch)在离家很远的地方。7答案与解析：B这是一个由not that与but (that)对应连用构成的平行结构，以“前否定、后肯定”的形式共同说明上文“待在家里”的原因，意思为“不是(因为)而是(因为)”。8答案与解析：D在野外困于暴风雨及恶劣的天气中时，“我”
44、都会有种急切的愿望(desire)，想要返回自己的树屋，就像小鹿想回到它们的灌木丛中一样。love爱；situation情况；demand要求。9答案与解析：B我们在荒野之中都有着自己可爱的小家(home)。10答案与解析：C由常识及上下文可知，报纸或广播都可以给人提供天气(weather)预报。11答案与解析：D它们能告知(tell)我们暴风雨什么时候来临。remind提醒；explore探索；lie撒谎。12答案与解析：A当五子雀躲起来时，“我”就会躲起来(hole up)，点上灯，坐在炉火旁，用芦笛学习新的曲调。turn up调高，出现；look up查找；put up建造，搭建，设置。
45、13答案与解析：A句意：现在已然来到隆冬时节。in the teeth of 直对；顶着；冒着；不顾。in the teeth of winter可译为“寒冬腊月/隆冬时节”。14答案与解析：B现在已是隆冬时节，此时这里却热闹(activity)非凡，深深地吸引着“我”。这里的activity为不可数名词，意思为“热闹，活跃”。15答案与解析：A本句承接上文具体描写夜晚的热闹情景：动物们在这冰天雪里跑来跑去(run)；树木在大声叫喊；树枝折断又掉落；风困在山谷里，尖声叫着直到归于平息。.语法填空【语篇解读】本文是一篇说明文，文章就如何成为一名成功的作家给出了建议。1答案与解析：how考查副词。
46、根据后文可知，本文就如何成为成功的作家提出了建议。此句意思是“很多学生想知道如何提升他们的写作”。2答案与解析：are考查主谓一致。本句为倒装句，主语为some suggestions，为复数形式，故填are。3答案与解析：books考查名词。book为可数名词，与a variety of搭配，表示“各种各样的书”，故填books。4答案与解析：from考查介词。learn from意为“向学习”，为固定搭配。5答案与解析：a考查冠词。表示泛指，“一句众所周知的谚语”，故用不定冠词a。6答案与解析：useful考查形容词。充当表语，表示“有用的”，故用形容词。7答案与解析：gradually考查副词。修饰动词improve，用副词。故填gradually。8答案与解析：better考查比较级。the比较级，the比较级为习惯搭配，表示“越越”。9答案与解析：to keep考查非谓语动词。“It is adj. for sb. to do sth.”为固定句型，其中It为形式主语，to do不定式为句子的真正主语。10答案与解析：following考查非谓语动词。作介词by的宾语，用动词的ing形式。