Unit 5 A delicate world Period 3 同步课后练习 -（2019）新外研版高中英语选择性必修第二册.docx

1、 Unit 5 A delicate worldPeriod 3一词形转换和动词的形式变换(用所给词的正确形式填空)1If an alarm gives you that feeling of (secure), then its worth carrying.2 (rare) do we see them nowadays, so it is impossible to ask them to help us.3I passed by Joan quickly without (greet) her, pretending not to see her.4The Great Wall was

2、 reconstructed in the Qing Dynasty to guard against_ (invade) by the tribes from the north.5The organization was set up to preserve the (endanger) species from dying out.6With her luggage in her hands, the girl stood looking round in all directions, but (apparent) no one had come to her assistance.7

3、The moment you get on the airplane, start adjusting your (biology) clock to the destinations time.8(2020全国卷)While the younger generations prefer to communicate_ (visual), for those used to working with traditional tools like email, it may feel like a learning curve(曲线).二固定用法和搭配(空白处填入一个适当的单词或括号内单词的正确

4、形式)1School activities are usually considered a good way (make) new friends and develop new interests.2In the Western countries，“V” often stands victory.3 comparison, this set of costume is low in price.4It is highly necessary to secure the influence of the new type of virus.5The new teaching buildin

5、g is named the donor.6We offer an excellent education to our students. return, we expect students to work hard.7The land is known a historic site with beautifully coloured walls, on which the events of the past are painted.8When driving on highways, the driver must control his or her speed the range

6、 of speedlimits.9More than half of the participants said that getting married was not an important criterion becoming an adult.10Scientists have said is rare for icebergs to be seen so far north.三完成句子/句型转换/一句多译1我很高兴代表我们学校向大家介绍这些活动。 ,_Im glad to tell you something about these activities.2需要采取措施保护这些必需

7、品不被恐怖分子抢劫。Some measures are needed to 3She rarely requested help but this was a matter of urgency. but this was a matter of urgency.4Compared with other students, Mike is more mature. other students, Mike is more mature.5他对父母对待和教育他的方式很满意。He was satisfied with (定语从句)He was satisfied with (不定式)四课文语法填空

8、Shennongjia made it onto the UNESCO World Heritage List in 2016.It is neither its forests 1. its wild man that has brought the status. It is because Shennongjia meets two 2. (criterion) required by the list.It contains a naturallybalanced environment with various species, 3._ scientists can observe

9、them in their 4. (biology) and ecological processes. 5. (addition), Shennongjia is also one of the most “complete” natural areas in the world, with a wide variety of species living in 6. same place. In order to protect the wild animals, scientists brave heavy snow 7. (supply) food to the animals her

10、e. Apart from that, the local people take things from nature without 8._ (cause) damage. That is why the wild animals and the local people can coexist in harmony 9. each other. All those well explain why Shennongjia 10._ (deserve) its place on the UNESCO World Heritage List.阅读理解AAir pollution may be

11、 causing baldness, scientists have shown for the first time. A new study found that fine particulate matter emitted by cars would damage the skin that holds hair follicles (毛囊) in place. A series of laboratory tests on human cells showed that levels of the crucial proteins needed for hair to grow an

12、d be retained decreased when they were exposed to pollution particles. While there is a growing body of evidence showing how these tiny particles can damage internal health, including by entering the bloodstream through the lungs, this is the first to demonstrate such a risk to the surface of the bo

13、dy.The study was conducted by exposing cells from the human follicle dermal papilla cells (HFDPCs) to various concentrations of PM10like dust and diesel particles. After 24 hours the researchers performed a process, known as western blotting, to detect the levels of specific proteins in the cells.Th

14、e results showed that the presence of PM10 and diesel particles decreased levels of Bcatenin, the protein responsible for hair growth. The study also revealed that the levels of three other proteinscyclin D1, cyclin E and CDK2, which are responsible for hair growth and hair retention, were decreased

15、 by PM10like dust and diesel particles in a “dosedependent” manner.Dr Hyuk Chul Kwon, who led the study at the Future Science Research Centre, said, “While the link between air pollution and serious diseases such as cancer and lung diseases is well established, there is littletono research on the ef

16、fect of particulate matter exposure on the human skin and hair in particular. Our research explains the mode of action of air pollutants on HFDPCs, showing how the most common air pollutants lead to hair loss.”Sources of PM include the burning of fossil fuelspetrol and diesel, as well as other solid

17、 fuels, and other industrial activities such as building, mining and the manufacturing of building materials like bricks.“While it is difficult to escape from the surrounding pollution, limiting the time for walking in busy streets, especially during rush hours, should help reduce exposure，” said Dr

18、 Kwon. “If you are exercising outdoors, try to do so in areas that are less polluted and do not spend too much time waiting at traffic hot spots such as traffic lights.”1What did the new study find?AAir pollution can do great harm to our lungs.BThe color of our skin can be influenced by air pollutio

19、n.CSerious air pollution can probably prevent hair from growing.DAir pollution can affect hair growth by entering the bloodstream.2What is western blotting used to do?ATo discover the protein helpful for hair growth.BTo show the protein content in the cells.CTo compare different proteins in the cell

20、s.DTo analyze the composition of hair cells.3What can we learn from Dr Hyuk Chul Kwons words?AHis new research is superior to previous research.BThe research he conducted is really of great importance.CThe results of his new research need to be further improved.DA link between air pollution and dise

21、ases needs to be established.BNowadays, were now eating twice as much fish as we were 50 years ago. While this growing demand for seafood is good for our health, its harming life in the oceans. Almost 60 percent of global fish are fully exploited (开发) and 30 percent are actually disappearing.By 2050

22、, with a predicted human population of around 10 billion and climate change decreasing fish populations at a rate of 20 to 30 percent for every 1C rise in sea temperature, we may be seeking novel fish sources.But fear not. A solution could be in sight, say researchers who have figured out the area o

23、f ocean suitable for aquaculture (水产养殖). The study, led by Rebecca Gentry of the University of California, Santa Barbara, identified areas up to 200 metres deep that are right for farming fish and shellfish, but currently unexploited.We would only need to farm a tiny part of the space identifiedno l

24、arger than Lake Michiganto match current production from wildcaught fisheries (渔业), the team says. Better still, if we used all ocean space suitable for aquaculture, we could produce as much as 15 billion tons of fish annually. Thats 100 times more than we currently eat each year.All of this suggest

25、s we could farm our way out of the fisheries crisis and possibly global food security problems. People want to eat more seafood, and we seem to have plentiful space to farm it. It sounds so simpleexcept that its not.For starters, not all suitable areas will become fish farms for many reasons, such a

26、s worries about habitat damage or local disagreement. Then theres the bigger problem of unintended effects. Rather than save wild fisheries, aquaculture can denigrate them further by spreading disease and pollution, not to mention the senseless practice of using small wild fish as feed for larger fa

27、rmed fish.Knowing that we have enough space we need to grow aquaculture offers some comfort. But there are also plenty of warnings. And if we continue consuming large amounts of wildcaught fish, we may soon have to accept that our diet will change in ways we havent expected.4What is the main reason

28、for farming fish in the ocean?AOcean exploitation.BEnvironmental protection.CGrowing need for fish.DThe diversity of fish.5What is the advantage of fish farms in the ocean?AWe can produce adequate amounts of fish in tiny space.BWe can solve the global food security problems.CIt is simple and practic

29、al to raise fish in the ocean.DAll suitable ocean areas can become fish farms.6What does the underlined word “denigrate” in paragraph 6 probably mean?AHarm. BBenefit.CPollute. DPromote.7Whats the authors attitude towards ocean fish farms?APositive. BObjective.CNegative. DIndifferent.完形填空You just can

30、t imagine what a brave mother is like. She was a mother of three, who just _1_ an earthquake, and couldnt tell if her children were _2_ for help. Or what if you knew you couldnt yell at her for help because she couldnt _3_ you? That was what happened to Connie and her three children _4_ the 6.1magni

31、tude earthquake rocked Napa, California. Connie is _5_ and communicates with her children using sign language.At midnight, Connie and her three children were _6_ on the first floor of their twostory home. She and her 16yearold son, Juan, were shaken awake. Instantly, they realized there were no disa

32、ster supplies downstairs. Connie, also _7_ onemonthold Raul and 8yearold Adriana, called Juan to come close to her in the darkness and _8_ for him to go upstairs to get a _9_Juan slowly _10_ the stairs. He heard a loud creak (嘎吱声). Arriving on the top floor, he moved quickly but _11_ to get what he

33、needed. Using the flashlight to guide his steps back _12_ the stairs, the family was able to take a few items from the first floor and _13_. Their home was almost in ruins.Being deaf was not deterrent (妨碍物) for this _14_ mother. The family made it to the _15_ safely, which comforted everyone.1A.expe

34、rienced BdreamedCavoided Dreported2A.turning around Bstanding byCrunning away Dcrying out3A.see BhearCforgive Dreach4A.when BafterCunless Dbefore5A.blind BdeafCold Dsick6A.alone BawakeCalive Dasleep7A.chatting to Bplaying withCfocusing on Drunning after8A.signed BphonedCshouted Dexplained9A.helper B

35、flashlightCbox Dsuitcase10A.mopped BexaminedCclimbed Dleft11A.carefully BregularlyCbravely Dhurriedly12A.up BaboveCunder Ddown13A.stay BreturnCflee Dcry14A.famous BskillfulCordinary Ddetermined15A.darkness BshelterCruins Dstairs参考答案与解析一词形转换和动词的形式变换(用所给词的正确形式填空)1.security2.Rarely3.greeting4.invasion5

36、.endangered6.apparently7.biological8.visually二固定用法和搭配(在空白处填入一个适当的单词或括号内单词的正确形式)1.to_make2.for3.By4.against/from5.after6.In7.for8.in/within9.for10.it三完成句子/句型转换/一句多译1.On_behalf_of_our_school 2.secure_the_necessities_against_terrorists3.Rarely_did_she_request_help4.In_comparison_with5.the_way_(that/in_which)_his_parents_treated_and_educated_himhis_parents_ways_to_treat_and_educate_him四课文语法填空1.nor2.criteria3.where4.biological 5.Additionally6.the7.to_supply8.causing9.with10.deserves.阅读理解A1.C 2.B 3.B 4.C 5.A 6.A 7.B .完形填空1.A 2.D 3.B 4.A 5.B 6.D 7.C 8.A 9.B 10.C 11.A 12.D 13.C 14.D 学科网（北京）股份有限公司