Unit5AdelicateworldPeriod2Usinglanguage练习（解析版）

1、Unit 5A delicate worldPeriod 2 Using language（练习解析版）I:单词拼写In her first book she explained the role of vegetable fibers, vitamins, minerals, and other essential （营养物）.【答案】nutrients.Warm the sugar slightly first to make it（溶解）quicker.【答案】dissolveIf you describe someone as a book（虫子）,you mean they are

2、very fond of reading.【答案】wormThey（授粉）the flower and help seeds develop better.【答案】pollinateThe girl student did not return home instead of attending the summer（期I可）of college.【答案】sessionProtect and restore wetlands, which are an important part of grassland（生态）.【答案】ecologyIn（比拟）with the previous stud

3、y, the new study expanded research subjects.【答案】comparisonTest results indicate that a （分解体）can remarkably improve the quality of this new material.【答案】decomposerThey strongly demand that you（补偿）for the loss.【答案】compensateIt is a very pretty butterfly, with a pair of colourful(翅膀).【答案】wingsII：单句语法填空

4、Both sides consider desirable to further the understanding between the two peoples.【答案】it【解析】consider it +adj + to do sth:用it作形式宾语，构成动词+形式宾语+宾语补足语的复合结构。Due to too much work to do, Ill leave it up to you(use) your discretion.【答案】to use【解析】leave+it (作形式宾语)+宾语补足语+to do sth (不定式作真正宾语后置)。I think it break

5、through to transform a desert into a forest or a wide stretch of grassland.【答案】a(absorb) in their game, these children did not feel hungry at all.【答案】Absorbed【解析】过去分词作原因状语，动词absorb与逻辑主语these children构成被动关系。Dont rely on(go) abroad for our holiday, for we may not be able to afford it.【答案】going【解析】rely

6、 on (one) doing sth ,动名词作宾语。They cannot be relied on( offer) much support or useful advice.【答案】to offer【解析】rely on sb to do sth:构成动词+宾语+宾语补足语复合结构，不定式作宾补。The dissolved chemicals are released back into the food chain(use) by producers.答案to be used【解析】不定式作目的状语，动词use与逻辑主语构成被动关系，故使用to be used.Secondary c

7、onsumers prey on primary consumers, as well as(eat) other animal matter.【答案】eating【解析】aswellas通常视为介词，后接动词时，常常使用动名词。In just a journey(collect) pollen and nectar, one single honey bee can pollinate as many as 50 to 100 flowers.【答案】to collect【解析 1不定式作后置定语，修饰前面的名词。Both patterns tend to exist by(feed) on

8、 each other.【答案】feeding.选词组并用其适当的形式填空。be native tofeed onabsorb. frombreak downa combination ofin existencepray ontransform. intocheck outtake inAccording to a study, butterflies a sweet liquid produced by flowers.【答案】feed onIt is common knowledge that humans oxygen and breathe out carbon dioxide.【答

9、案】take in【解析】本语境中take in意为：吸收。The worms* ability to break down their everyday food also allows them to plastic.【答案】break down【解析】breakdown：分解；本句意为：蠕虫分解日常食物的能力也允许他们分解塑料。The rule says that guests should of their rooms by noon if they dont pay more foraccommodation.【答案】check out【解析】check out:结账离开；登记退出。

10、The lions in this area deer and other wild animals for food.【答案】prey on【解析】prey on：捕食；掠夺。The red-eared slider, a species of freshwater turtle,Central America.【答案】is native to【解析】be native to：原产于；是.某地特有的。internal and external factors caused the company to close down.【答案】A combination of【解析】a combinat

11、ion of ：结合;.兼而有之。The ancient china is thought to be the only one in the province.【答案】in existence【解析】in existence：现存的，实际存在的If we use this new way to boil meat, minerals animal foods more easily.【答案】are absorbed fromDuring the holiday season, the town a Christmas wonderland.【答案】is transformed into【解析

12、】o.把.转变成为.七选五：从短文后的选项中选出可以填入空白处的最正确选项。选项中有两项为多余选项。China has made great improvements in environmental protection during the past seven years A Each species （物种）on Earth has a role to play in the ecosystem.In recent decades, a series of wildlife-protection movements have been carried out

13、by the central government. 2. The giant panda and the crested ibis are among these success stories.The giant panda used to have a population of 1114 in the 1970s. It now totals 1864 thanks to 52 protection areas. 3 . By the end of last year, seven of the nine pandas released had survived in the wild

14、. 4 In 1981, only seven crested ibises were found in Yangxian county, Shaanxi Province.Since then, breeding programs have helped the population reach 2000. China has even sent crested ibises to Japan and South Korea in recent years, to help with the species survival.5 Key projects will be continuall

15、y carried out to improve protection, including making the lists of wild animals and plants under State protection, and also fighting against illegal wildlife trade, which includes ivory （象牙）.As environmental damage has increased, signs of change have appeared around the world.Another species was onc

16、e thought to be extinct.Scientists have worked to feed pandas and then release them into the wild.People call for immediate protection of the remaining species.Several species in danger of extinction have made impressive progress thanks to the methods.China will continue its efforts of the wildlife

17、protection.Protecting wildlife is, without doubt, an important part.【答案】1-5 GECBF【解析】这是一篇说明文。文章主要介绍了在过去的70年里，中国在环境保护方面取得了很大的进 步。保护野生动物无疑是重要的一环节。.不艮据前文 China has made great improvements in environmental protection during the past 70 years. 可知，在过去的70年里，中国在环境保护方面取得了很大的进步。再根据后文Each species （物种） on Earth

18、 has a role to play in the ecosystem.可知，地球上的每一个物种都在生态系统中扮演着重要的角 色。由此可知，G 项 Protecting wildlife is, without doubt, an important part.（保护野生动物无疑是 重要的一环节）切题。应选G。.不艮据前文 In recent decades, a series of wildlife-protection movements have been carried out by the central government.可知，近几十年来，中央政府开展了一系列的野生动物保护运

19、动。由此可知， E 项 Several species in danger of extinction have made impressive progress thanks to the methods.（一些濒 临灭绝的物种由于采取了这些保护措施而取得了令人瞩目的进展）切题。应选E。. 根据后文 By the end of last year, seven of the nine pandas released had survived in the wild. nJ 知到去年年底，放归的9只大熊猫中有7只在野外存活。由此可知，C项Scientists have worked to fe

20、ed pandas and then release them into the wild.（科学家们一直致力于喂养大熊猫，然后将它们放归野外） 切题。应选C。.根据后文 In 1981 , only seven crested ibises were found in Yangxian county, Shaanxi Province . China has even sent crested ibises to Japan and South Korea in recent years, to help with the species survival.可知，在1981,在陕西省的洋县，

21、只发现七只凤头鹦鹉.近年来，中国甚至将朱鹘送往日本 和韩国，以帮助该物种的生存。由此可知，B项Another species was once thought to be extinct.（另一 个物种曾经被认为已经灭绝）切题。应选B。.根据后文 Key projects will be continually carried out to improve protection, including making the lists of wild animals and plants under State protection, and also fighting against ille

22、gal wildlife trade, which includes ivory （象牙）.可知，继续实施重点保护工程，包括制定国家保护野生动植物名录，打 击包括象牙在内的非法野生动物贸易。由此可知，F项China will continue its efforts of the wildlife protection.（中国将继续加强野生动物保护）切题。应选F。V:阅读理解。阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白 处的最正确选。One kind of female butterfly mates only once in its life - and th

23、en closes its wings to avoid harassment when pursued by persistent and unwanted males, a Japanese researcher said.Observations of the Small Copper Butterfly, a colourful orange and black butterfly, showed that some females closed their wings when males flew by, but only when they were males of their

24、 own species, said Jun-Ya Ide, an associate professor at Kurume Institute of Technology in Fukuoka, western Japan.HWhen we looked into why, the males were courting the females. They do this very stubbornly, so the females sometimes try to get away or prefer to stay unobserved, he added.Ide and his c

25、olleagues brought a model of a male butterfly near the females to test their reactions and found that young females that had yet to mate kept their wings open, but those that had already mated closed them.Not only can the persistent attentions of unwanted suitors harm the delicate females, fleeing f

26、rom them with the male often in pursuit uses up strength and can even shorten their lives, he added. Closing their wings makes them less visible, helping them avoid communication with their own species. We figured they were trying to avoid harassment by males, Ide said.What does the word “harassment

27、“ mean in the paragraph?A. attackB. embarrassment C. sexual invasion D. threatWhy some females closed their wings when males flew by?A. because they close their wings to avoid harassment“ when pursued by persistent and unwanted males.B because the female butterfly mates only once in its life.because

28、 they dont like the male butterfly at all.because they are afraid of the male butterfly.According the the passage, which is correct?A. The females closed their wings when males flew by.B Only the model of a male butterfly can make the young female butterflies to keep their wings open.The female butt

29、erfly mates only once in its lifeNot only can the persistent attentions of wanted suitors harm the delicate females, fleeing from them with the male often in pursuit uses up strength and can even shorten their lives.【答案】l.c2.A3. C【解析】本文是一篇说明文，科学家发现一种雌性蝴蝶一生只交配一次，并且会在交配之后合上翅 膀，以此来躲避雄性蝴蝶的追逐。.析才隹那么题。第一句

30、原句 One kind of female butterfly mates only once in its life - and then closes its wings to avoid harassment when pursued by persistent and unwanted males, a Japanese researcher said.日本一位研究人员称，雌性红灰蝶一生只交配一次，在其它雄性红灰蝶不停地追求它时，它会 合上翅膀躲避这种harassment。根据句意，应选C性骚扰。.2山节题。最后句Closing their wings makes them less

31、visible, helping them avoid communication with their own species. We figured they were trying to avoid harassment by males,“合上翅膀可以让雌 蝶不那么显眼，防止与同类红灰蝶的接触。我们认为它们是在躲避雄蝶的性骚扰。应选A.细节题。文中第一句 One kind of female butterfly mates only once in its life 一种雌性蝴蝶一生 只交配一次。应选CVI.语篇填空The red-eared slider, a species of freshwater turtle, is native 1 the Southern United St