1、Unit 4 第2课时.单词拼写1The_(气氛) at home has been depressing since they had the fight.2Chemicals that are_(有害的) to the environment are forbidden here.3Your_(出场) is requested at the club meeting on Friday.4Lacey has a back injury that may_(阻止) him playing in tomorrows game.5In this_(激烈的)conflict, about 20 c
2、ommon people died.答案：1.atmosphere2.harmful3.presence4.prevent5.violent.易混模块采用in time/on time/in no time/at one time/at times/at any time填空：1Why are you in a hurry to leave here?Get home_to bathe the children.2These buses are never_and the passengers are always complaining.3I am away, please call me_
3、if someone comes to see me.4You cant imagine this lake used to be a beautiful place in our province_.5He rushed out of the kitchen_when he heard the shout.6_I sit silently and wonder if this kind of job is worth all the effort.7_will China first use nuclear weapons.答案：1.in time2.on time3.at any time
4、4.at one time5.in no time6.At times7.At no time.短文填空根据课文内容填空。The dust began to slowly combine into a ball moving around the sun. The problem was that the earth became_because it was not clear whether the_shape was to last or not. It_loudly with fire and rock, which were_ _to produce the water vapour
5、，_ _，_and other gases. As the earth cooled down, water began to appear on its_. It allowed the earth to dissolve_gases, which had become part of the earths_. That made it possible for life to begin to_. Small plants began to grow in the water on its surface, which encouraged the_of early shellfish a
6、nd all sorts of fish_the first oceans and seas_oxygen. Many millions of years later the first green plants began to appear on_. Later land animals appeared, such as insects and amphibians. When the plants grew into forests, reptiles appeared_ _ _ _. Later some huge animals, called dinosaurs, develop
7、ed. They became_ _ _animals on the earth for millions of years. But when they disappeared, mammals became more important. They developed new_of growing food, hunting and moving around. However, they are putting too much carbon dioxide into the atmosphere, which_heat_escaping from the earth into spac
8、e. Whether life will continue on the earth for millions of years to come will_ _whether this problem can be solved.答案：violent; solid; exploded; in time; carbon dioxide; oxygen; surface; harmful; atmosphere; develop; development; filling; with; land; for the first time; the most important; methods; p
9、revent; from; depend on.单项填空1If a man_succeed, he must work as hard as he can.AwillBis toCis going to Dshould答案：B考查be to do结构。此处be to do表示“必然要发生的事”。2(2010温州市省一级重点中学期末统测)Did you enjoy yourself yesterday?Yes. As you saw，_party went on in_most pleasant atmosphere.Athe; a Bthe; the Ca; the Da; a答案：A考查冠词
10、。第一空表示特指昨天晚上的晚会，所以用定冠词the；第二空most相当于very，不是最高级，所以填不定冠词a，表示在非常友好的气氛中。3How often do you drop your epal a line?_， but usually once a week.AAs usual BIt dependsCGenerally speaking DHave no idea答案：B句意：“你经常给网友写信吗？”“看情况而定，但是通常一周一次。”as usual“像通常一样”；it depends“视情况而定”；generally speaking“一般来说”；have no idea“不知道
11、”。4I would rather not_Mary until I am quite sure that she is trustworthy.Adepend on Battend toCwait on Dapply to答案：A句意：我宁愿直到我非常相信玛丽的诚实为止我才指望她。depend on在此句中意为“依靠；指望”。attend to“护理，注意”；wait on“服侍”；apply to“适用于”。5People will thank the firefighters for the things they do to prevent fires_the environment
12、safer.Amake Bto makeCfrom making Dmaking答案：B句意：人们对于消防队员为了使环境更加安全而防止火灾所付出的努力将会感激的。prevent后面也可接宾语，表示“防止某事的发生”，填空处作目的状语，所以要用不定式。.完形填空阅读下面短文，理解大意，从题中所给的A、B、C、D四个选项中选出一个最佳答案。It was July 1976. An unmanned spaceship, Viking One, had arrived at Mars(火星)On July 20th, the spaceship_1_. Part of it continued to
13、ward a landing on the planet. It fell_2_through the late afternoon Mars sky.Forty kilometers above the planet, the thin_3_began to slow its fall. Six kilometers above the planet, a big parachute(降落伞)opened. The landing craft fell more slowly. Then, three rocket engines_4_. And the landing craft set
14、down_5_on the surface._6_in the Viking One Lander immediately sent a message to the earth. It said：“I am here. I am down safely. I am beginning my work.”The message_7_at the speed of light. It took twenty minutes to reach the earth, more than three hundred twenty million kilometers_8_. Scientists an
15、d engineers at the control center_9_.Moments later, television receivers in the control center began to_10_the first pictures from Viking One. People at the center could see the feet of the landing craft sitting firmly on the_11_soil of Mars. Those pictures were our first_12_look at the planet. They
16、 showed a red surface, full of rocks, with no sign of_13_. It was our first look at a planet that is full of surprises, mysteries, and promise.Viking One was launched toward Mars in August, 1975. The spaceship had two_14_： an orbiter and a lander. The orbiter would circle_15_Mars. It would take pict
17、ures of Mars surface. It would_16_the atmosphere.The_17_would go down to the surface. It would carry_18_to dig up and study soil and_19_. It also would report about any evidence of life on the planet. The lander would send this_20_to the orbiter and then back to the earth.1A.separated BappearedCwork
18、ed Dstarted答案：A下文Part of it continued toward a landing.可知飞船分开两个部分。2A.correctly BslowlyCquickly Ddirectly答案：C下文began to slow its fall暗示此刻飞船的这一部分在快速地降落。3A.atmosphere BuniverseCspace Dair答案：Dair指“空气”；atmosphere指“大气、大气层”(the mixture of gases that surrounds any heavenly body)。资料表明，火星外围只有稀薄的空气，并未形成大气层。4A.
19、fired BfellCopened Dflated答案：Afired在此处意为“点火”。5A.heavily BsoftlyCsuddenly Dimmediately答案：B从上文“一个大降落伞打开了”，“正在着陆的小飞船便缓慢地降下”，可知小飞船落地很柔和。6A.A computer BA rocketCA pilot DAn astronaut答案：A在火星着陆的飞船Viking One为无人驾驶飞船，其程序由电脑控制。7A.spread BtravelledCshot Dmoved答案：BViking One通过电脑发出的信息以光的速度传播。travel在此表示“运行，传播”。8A.
20、far BlongCdistant Daway答案：Dmore than three hundred twenty million kilometers away(3亿2千多万公里)，指地球到火星的距离。9A.shouted BwatchedCcheered Dwelcomed答案：C信息从火星跨越3亿2千多万公里只需20分钟便传到地球，故控制中心的科学家和工程师为之欢呼。10A.make BtakeCshow Dsearch答案：C控制中心的电视机开始播放Viking One发来的第一批照片。11A.red BbrownCgrey Dblack答案：A由下文“They showed a re
21、d surface, full of rocks”可知火星的地表是红色的。12A.careful BcloseCreal Dclear答案：Bclose look表示“(我们对这个星球)最接近(真实情况)的观察”。13A.men BlifeCtrees Dair答案：Bmen和trees都属于life(生命)。D项与上下文所述不符。14A.parts BrocketsCengines Dcenters答案：A下文表明：Viking One有两个部分，即an orbiter(沿轨道运行的部分)和a lander(着陆的部分)。15A.through BtowardsCover Daround答案
22、：Dcircle around Mars“环绕火星运行”。16A.enter BexamineCcollect Ddiscover答案：Bexamine在此表示“考查、检查”(look at sth closely in order to find out)，而discover则意为“发现(已存在尚未知道的事实)”，即find sth existing but not known。火星上有无大气，还不清楚，故只能用examine，而不能用discover。17A.orbiter BlanderCspaceship Drocket答案：B着陆的那一部分将抵达火星表面。18A.engineers
23、BastronautsCparachutes Dinstruments答案：D指着陆那一部分将携带仪器。19A.surface BtreesCrocks Dpictures答案：C挖掘和研究(火星的)土壤与岩石。soil与rocks上文皆有出现。20A.spaceship BrocketClander Dinformation答案：Dthe lander将把有关火星的信息送至orbiter再传到地球。.阅读理解阅读下面的文章，从题中所给的A、B、C、D四个选项中选出最佳答案。A young man named Charles Lyell had different ideas.He wrote
24、 a book about them called Principles of Geology.The earth，according to Lyell, was not only thousands of years old，it was millions of years old.As to the common belief that changes in the earths surface happen suddenly because of a single earthquake or flood，he said that this might happen once in a w
25、hile，but usually these changes took place very slowly.He believed that the surface of the earth had been changing from the beginning of time.The changes，he said，were caused by the longterm action of the winds and seas，and by forces such as volcanoes breaking out under the earths surface.Once in a gr
26、eat while he thought，a mountain might appear for the first time after an earthquake.But usually mountains would rise slowly and steadily. Professor Henslow was interested in Lyells ideas，but he did not actually believe them.Charles Darwin could not make up his mind about them.But they set him thinki
27、ng along lines which would later change the beliefs of thoughtful people all over the world.At Cambridge，Charles Darwin studied just enough to pass the examination，and received his college degree in 1831.During this time，he had become more and more interested in geology. At the end of the school yea
28、r，he went to North Wales with one of his teachers to examine the rock formations(构成) and to search for fossils(化石). Fossils are the remains of ancient living things.They are usually found fixed in rocks in the earths crust(地壳). Fossils may be of animals，such as fish，insects，birds，or humans.They may
29、be of plants from tiny leaves to huge trees.When a living creature dies，it usually decays(腐烂) or is eaten by animals.However，if it sinks into a riverbed or is quickly covered by the blowing sands of a desert storm，the bones are kept up in the earth. Over many years the soft inner parts of a bone dis
30、appear, leaving the inside hollow. Water containing mineral enters into the hollow. Slowly the mineral hardens and makes the bone hard and heavy, like stone.1According to Charles Lyell, it is mainly_that the earth has been formed like todays shape.Afrom the beginning of timeBpast some experiences of
31、 big floodCover a very long period of yearsDbecause of several big earthquakes答案：C本题是细节考查题。根据第一段“.it was millions of years old”及“.usually these changes took place very slowly”可得出地球形成今天的形状经历了很长一段时期。2Charles Lyell believed the fact that a mountain is formed_.Amore by seas than by volcanoesBmore slowly
32、 than suddenlyCmore by an earthquake than by windsDmore steadily than quickly答案：B本题是推断题。要求从原文去仔细推断才能知道答案。第一段末尾“.usually mountains would rise slowly and steadily”及前文语意可知Charles Lyell认为山的形成是缓慢的过程而不是突然形成的。3Unlike Professor Henslow, Charles Darwin_.Anever thought Lyells ideas were rightBdid made up his
33、mind not to accept Lyells ideasCthought about what the world were then thinking aboutDthought over Lyells ideas and developed them答案：D本题是推断题。第二段“Charles Darwin could not make up his mind about them. But they set him thinking along lines.”表明Darwin对Lyell的观点进行思考并加以发展。4The main purpose of Darwins going to North Wales was to_.Amake a study of fossilsBappreciate the rock informationCdo research work into dead animalsDlook for plants from tiny leaves to huge trees答案：A本题是细节判断题。第三段“.went to North Wales.to search for fossils”表明目的是对化石进行研究。