1、课时跟踪练(一) Welcome to the unit & Reading Pre reading.阅读理解APeople and the sources of air pollution are found in the same places.This means that cities with large populations have the biggest problem of dirty air.Air pollution is caused by many different things.A major source of air pollution is the gas
2、 fumes (烟雾) from cars.Statistics show that 93 percent of all auto trips are within cities.Another major source of dirty is the burning of coal and oil for energy.This energy is needed to make electricity.Of course, much more electricity is used in the city than in the countryside.On the average, we
3、throw away more trash and garbage than the year before.The burning of garbage contributes to air pollution.Many major industries are also responsible for the dirty air in the around cities.The fumes from iron, steel, chemical, and petroleum (石油) production add particles (微粒) to the air.The effects o
4、f air pollution range from loss of clear vision, mild headaches to death.Wherever coal and oil are used for fuel, fumes may kill trees and plants and cause metal to corrode (腐蚀)In some larger cities, these fumes endanger the life of human beings by contributing to lung diseases and causing early dea
5、ths.语篇解读：本文主要介绍了城市空气污染的原因与后果，旨在呼吁人们停止继续污染空气。1The key point of the passage is that _.Athe cause of air pollution is peopleBthe causes and the effects of air pollution are both found in citiesCthe effects of air pollution range from headaches to deaths Dair pollution is caused by dirty air解析：选 B 主旨大意题
6、。根据各段首句，特别是第一段的首句可知，本文主要讲的是城市里的空气污染原因与后果。2What is the purpose of this passage?ATo persuade people to stop polluting the air. BTo tell the causes of air pollution.CTo tell why cities have larger populations. DTo describe why cities are bad places to live.解析：选 A 写作意图题。空气污染严重危害人的健康，所以本文的目的是呼吁人们停止污染空气。3
7、Why is air pollution heavier in the city than in the countryside?ABecause there are more people in city.BBecause the air in the city is thinner.CBecause there are more cars in the city.DBecause there are more air pollution sources in the city.解析：选 D 细节理解题。根据第一段第二、三两句可知，城市里有更多的空气污染源。4In larger cities
8、, the fumes from coal and oil may result in_.Aheart diseases Bserious headachesClung diseases Dloss of clear vision解析：选 C 细节理解题。根据文章最后一句可知选 C。BIs your school good for the environment?Being green isnt easy for Kermit the Frog (a famous cartoon character) but it is easy for a growing number of schools
9、 around the country.A “green” school is an environmentally friendly building that uses less energy by depending on the Earths natural resources for heat, light, and power.Green schools have clean air, a lot of natural light, and renewable power sources.New studies show that green schools are not onl
10、y good for the environment, but good for you too! Kids in classrooms with a lot of daylight scored 25 percent higher on reading and math tests than students who studied in rooms with less natural light.Students in schools with more natural light took three to four fewer sick days than students expos
11、ed to artificial classroom lighting.The study further found that those students had less caries (龋齿) because they were exposed to more of the vitamin D produced by the sun.The Willow School in New Jersey, is a school that was built as a green building in 2002. Parts of the building are made totally
12、from recycled materials.To help trap heat, for example, building workers filled the walls with materials from old blue jeans instead of the traditional insulation (隔热材料) made of chemicals. Every classroom has skylights to allow most sunlight, and solar panels line the south end of the building.It us
13、es about 70 percent less energy than a nongreen school.This helps the school cut down on high energy costs.Kate Burke Walsh, head of the Willow School, says, “Sunlight has an impact youre happier. The clean, natural surroundings help both students and teachers handle stress and stay relaxed and focu
14、sed .its a very calming atmosphere.”语篇解读：本文是一篇说明文。绿色学校是指一种环保型的学校，学校的建筑等各种设施充分利用自然资源来获取热和光等。美国有很多的绿色学校，在这种学校学习的学生成绩较好，患龋齿的也很少。另外，利用可再生资源还减少了学校的开支。5Whats the purpose of the question in the first paragraph?ATo show the writers interest in school life.BTo express the writers caring about environmental p
15、rotection in school.CTo expect readers to give a clear answer.DTo introduce the main topic of the passage.解析：选 D 细节理解题。作者在第一段中提出了一个问题“Is your school good for the environment？” ，目的是引出后面即将讨论的 green school 这个话题，所以选 D。6According to the passage, green schools are a place _.Awhere natural resources are ma
16、de full use ofBwhere more trees are planted in the schoolyardCwhere students are healthy and care about the environmentDwhere the walls of buildings are specially made to reflect light解析：选 A 细节理解题。根据第二段中的 “Agreenschool is an environmentally friendly building that uses less energy by depending on the
17、 Earths natural resources for heat, light, and power.”可知，绿色学校是指利用自然资源来获取热量、光和电力的学校，所以选 A。7How can students benefit from green schools?AThey wont fall ill during the term.BThey can get good marks in exams.CThey will have white and beautiful teeth.DTheyll pay less for their schooling than students in
18、other schools.解析：选 B 细节理解题。根据第三段中的 “Kids in classrooms with a lot of daylight scored 25 percent higher on reading and math tests”可知选 B。8Whats the purpose of the author writing the passage?ATo explain why green schools are popular.BTo encourage parents to choose green schools for children.CTo introdu
19、ce the advantages of green schools.DTo expect students to learn about green schools.解析：选 C 写作意图题。本文主要介绍了什么是绿色学校以及绿色学校的各种优点，如：绿色学校可以使得学生变得更加健康、快乐并提高他们的学习成绩等，故选 C 项。CTo promote manandnature harmony, retired basketball star Yao Ming has accepted the challenge from British outdoor adventurer Bear Grylls
20、 to join the shooting (拍摄) of a wildernesssurvival TV reality show.Trekking through wilderness and feeding celebrity (名人) guests very unusual foods has been Grylls routine in his hit adventure TV series, Running Wild with Bear Grylls. The show has featured a very famous cast, including former US pre
21、sident Barack Obama, who accompanied the British survivalist into the wild.Yaos management team confirmed that the former NBA star would appear in the shows Chinese version.Yao, according to his management team, has long admired Grylls selfchallenging courage and outdoor survival skills.They met dur
22、ing a speech in London by Britains Prince William to promote a campaign against the illegal wildlife trade.Yao will participate in the shooting of one part of the shows new season after he returns from a US trip to attend his Basketball Hall of Fame induction (正式吸收) ceremony.Grylls invited Yao in a
23、post on Grylls personal account on the social networking platform Sina Weibo.“Your great contribution to charity after you retired has made the entire society feel even more proud of you.With the spirit of fighting and cooperation, you are the exact fighter whom the wild adventure always tries to ca
24、ll， ” Grylls said in the post.On 1st Sep.2016, Yao said he was ready to accept the challenge.“Humans are losing the ability to survive in the wild， ” he said, “so its necessary to rediscover the survival instinct (本能) so future generations can live in harmony with nature and animals.”Since retiring
25、from basketball in 2011, Yao has been an advocate of wildlife and nature protection.He has made a number of public service ads for the fight against the ivory trade and opposing consumption of shark fins (鱼翅)语篇解读：退役篮球运动员姚明决定参与录制英国户外探险家贝尔格里尔斯的野外生存真人秀，目的是为了促进人类和自然的和谐相处。9What is Yao Mings purpose in at
26、tending Bear Grylls show?ATo show his talent for performance.BTo promote the harmony of man and nature.CTo encourage people to challenge themselves.DTo make an ad of wildlife and nature protection.解析：选 B 细节理解题。根据第一段的叙述可知，为了促进人类和自然的和谐相处，退役篮球巨星姚明日前接受了英国户外探险家贝尔格里尔斯的邀请，决定参与录制贝爷的野外生存真人秀。10Running Wild wi
27、th Bear Grylls, an adventure TV series, _.Ahas attracted many famous people to joinBis famous for its unusual foods for guestsCgot support from Britains Prince WilliamDwill invite Yao Ming and Barack Obama to join解析：选 A 细节理解题。根据第二段 “Trekking through wilderness and feeding celebrity (名人 ) guests . Th
28、e show has featured a very famous cast, including former US president Barack Obama, .”可知， Running Wild with Bear Grylls 吸引了很多名人来参加。11Why did Bear Grylls invite Yao Ming to participate in the show?AHe admires Yao Mings selfchallenging courage.BHe wants to learn outdoor survival skills from Yao Ming.C
29、He thinks highly of Yao Mings great contribution to charity.DHe wants to make his show popular with the fame of Yao Ming.解析：选 C 细节理解题。根据第四段的叙述可知，贝爷此前在个人新浪微博向姚明下“战帖”邀请其参加节目。贝尔在微博中写道：“姚明先生在退役后对慈善公益的巨大贡献使全体国人更以你自豪。昔日篮球生涯使得你身上兼具竞技和合作精神，这些素质使你成为我们节目的不二人选。 ”由此可知，Bear Grylls 邀请姚明参加他的电视系列剧是因为他对姚明对慈善事业的贡献有很高
30、的评价。12It can be inferred from the passage that Yao Ming _.Aspeaks highly of humans ability to survive in the wildBthinks its unnecessary to rediscover the survival instinctCthinks humans are unlikely to live in harmony with nature and animalsDis full of enthusiasm about natural conservation since re
31、tiring from basketball解析：选 D 推理判断题。根据最后一段的叙述可知，姚明在 2011 年从篮球队退役后，是野生动物和自然保护的倡导者，并拍了许多保护野生动物的公益广告。由此可以推知，退役后他热衷于自然保护。.阅读七选五How teens can stay fitAny type of regular, physical activity can improve your fitness and your health._1_Exercise should be a regular part of your day, like brushing your teeth,
32、eating and sleeping.It can be in gym class, joining a sports team, or working out on your own.Keep the following tips in mind：_2_ A good attitude is important.Find an activity that you think is fun.You are more likely to stick with it if you choose something you like.A lot of people find its more fu
33、n to exercise with someone else, so see if you can find a friend or family member to be active with you.Take it one step at a time._3_ For example, walk or ride your bike to school.Get on or off the bus several blocks away and walk the rest of the way.Use the stairs instead of taking the elevator.Ge
34、t your heart pumping (跳动)Whatever you choose, make sure it includes aerobic (有氧的) activity that makes you breathe harder and increases your heart rate.This is the best type of exercise because it increases your fitness level and makes your heart work better._4_ Examples of aerobic activities are bas
35、ketball, running, or swimming.Dont forget to warm up.With some easy exercises or stretching (拉伸) before you do any physical activity._5_ It is also important to stretch out after you exercise to cool down your muscles.AIt also burns off body fat.BStay positive and have fun.CMake physical activity a habit.DSmall changes can add up to better fitness.EThe most important thing is that you keep moving!FThis warms your muscles up and may help protect against injury.GDo the activity as often as possible, but dont exercise to the point of pain.答案：15 EBDAF
