1、Unit6 Section A Starting out & Understanding ideas一、单词拼写1.When you are shooting an arrow,you must aim at the t.2.The main purpose of his holiday to Greece is that he can (潜水) in the sea.3.In Africa,people have driven the rhino to the edge of (灭绝).4.(幸好),the weather that winter was reasonably mild.二、
2、短语填空have a great effect on,in fear,by mistake,see.as,be covered with1.The boy came and trembling to tell his father he had a bad report card.2.The men lost their way in a sandstorm and crossed the border .3.As we know,rainforests the world environment.4.Do you her a person who is longing and gratefu
3、l for a new start? 5.Two fifths of the land in that district trees and grass.三、阅读填句What Is Particulate Matter?There are things floating around in the air.Most of them, you cannot even see.They are a kind of air pollution called particles or particulate matter.In fact, particulate matter may be the a
4、ir pollutant that most commonly affects peoples health.Have a Look.Particles can come in almost any shape or size, and can be solid particles or liquid droplets.1 These groups differ in many ways.One of the differences is size. We call the bigger particles PM 10 and we call the smaller particles PM
5、2.5.BIG.The big particles are between 2.5 and 10 micrometers (from about 25 to 100 times thinner than a human hair).These particles are called PM 10 (we say “PM ten”, which stands for Particulate Matter up to 10 micrometers in size).2SMALL.The small particles are smaller than 2.5 micrometers (100 ti
6、mes thinner than a human hair).3 We say “PM two point five”, as in Particulate Matter up to 2.5 micrometers in size.The smaller particles are lighter and they stay in the air longer and travel farther.PM 10 (big) particles can stay in the air for minutes or hours while PM 2.5 (small) particles can s
7、tay in the air for days or weeks.And travel?4 PM 2.5 particles go even farther many hundreds of miles.Particulate Matter and Your Health.Both PM 10 (big) and PM 2.5 (small) particles can cause health problems, specifically respiratory (呼吸的) health.When you breathe, you take in the air along with any
8、 particles that are in the air, like heavy metals and cancer-causing organic compounds.5 Exposure to particulate matter leads to increased use of medication and more visits to the doctor or the emergency room.A.These particles are called PM 2.5.B.We divide particles into two major groups.C.These par
9、ticles cause less severe health effects.D.Air pollution is a growing problem in the whole world.E.PM 2.5 can have worse health effects than the bigger PM 10.F.PM 10 particles can travel as little as a hundred yards or as much as 30 miles.G.Both visible and invisible air pollutants have great effects
10、 on our environment, our health, and the quality of our lives.四、语法填空The Silk Road is in fact a 1.(relative) recent term.These ancient roads had no particular name until the mid-nineteenth century;Baron Ferdinand von Richthoften named the trade and communication network the Silk Road.Since then the t
11、erm 2. (accept) globally.In the nineteenth century,a new type of travellers stepped onto the Silk Road: archaeologists and geographers,enthusiastic explorers who were eager 3. (look) for adventure.Researchers who came from many countries travelled through the Taklamakan Desert, 4. is now in Xinjiang
12、,to explore ancient sites along the Silk Road, 5. (lead) to many discoveries and studies,and most of all,a renewed interest 6. the history of these routes.Today,many historic 7. (build) and monuments still stand,marking the passage of the Silk Road through hotels,ports and cities.Whats more,the long
13、-standing legacy of this 8. (impress) network is reflected in a large number of cultures,languages,customs and religions that have developed for many years along these routes.The passage of merchants and travellers of many different nationalities resulted not only in commercial exchange, 9. in a wid
14、espread and continual process of cultural interaction.Obviously,it 10. (become) a driving force in the formation of diverse societies.一、单词拼写1.target2.dive3.extinction4.Fortunately二、短语填空1.in fear2.by mistake3.have a great effect on4.see;as5.is covered with三、阅读填句1.B。根据空格后面These groups differ in many w
15、ays.One of the differences is size. We call the bigger particles PM 10 and we call the smaller particles PM 2.5.可知,我们可以把这些颗粒分为the bigger和the smaller两类。2.C。空格前提到了PM 10的相关知识,后面理所当然应提到它对人类健康的影响,且在第一段就已经提到了颗粒物会对人类的健康造成影响,所以选C。3.A。根据上文The small particles are smaller than 2.5 micrometers可知答案。4.F。空格前提到And
16、travel? 空格后面PM 2.5 particles go even farthermany hundreds of miles.综合可知,空格处应该提到PM 10可以漂浮到多远。5.E。本段主要讲颗粒物对人类健康造成影响,根据前面两段对PM10和PM2.5的介绍以及后文(暴露于颗粒物会导致更多的药物使用和更多的就诊医生或急诊室。)可知PM2.5对健康的影响比PM10更严重;故选E。四、语法填空1.relatively考查副词。修饰形容词recent,用副词,所以填relatively。2.has been accepted考查时态语态。由Since then可判断出用现在完成时,且the
17、 term与accept之间是逻辑上的被动关系,所以用现在完成时的被动语态。3.to look考查非谓语动词。be eager to do sth“渴望做某事”。4.which考查定语从句。此处是一个非限制性定语从句,关系词在从句中作主语,指物,所以填which。5.leading考查非谓语动词。lead与其逻辑主语Researchers之间是主动关系,所以用动词-ing形式。6.in考查固定词组。in the history of“在历史进程中”。7.buildings考查名词复数。many修饰可数名词复数,所以填buildings。8.impressive考查形容词。修饰名词network,用形容词,所以填impressive。9.but考查连词。not only.but (also).“不仅而且”。10.has become考查时态。根据句意可知,此处表示过去发生的事情对现在的影响,所以用现在完成时。第9页（共9页）
