高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration当堂达标检测题

这是一份高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration当堂达标检测题，共12页。试卷主要包含了5分,满分37等内容，欢迎下载使用。
第三单元过关检测(B卷)
(时间:90分钟　满分:120分)
第一部分　阅读(共两节,满分50分)
第一节(共15小题;每小题2.5分,满分37.5分)
阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。
A
(2019·北京卷)
By the end of the century,if not sooner,the world's oceans will be bluer and greener thanks to a warming climate,according to a new study.
At the heart of the phenomenon lie tiny marine microorganisms(海洋微生物) called phytoplankton.Because of the way light reflects off the organisms,these phytoplankton create colourful patterns at the ocean surface.Ocean colour varies from green to blue,depending on the type and concentration of phytoplankton.Climate change will fuel the growth of phytoplankton in some areas,while reducing it in other spots,leading to changes in the ocean's appearance.
Phytoplankton live at the ocean surface,where they pull carbon dioxide(二氧化碳) into the ocean while giving off oxygen.When these organisms die,they bury carbon in the deep ocean,an important process that helps to regulate the global climate.But phytoplankton are vulnerable to the ocean's warming trend.Warming changes key characteristics of the ocean and can affect phytoplankton growth,since they need not only sunlight and carbon dioxide to grow, but also nutrients.
Stephanie Dutkiewicz,a scientist in MIT's Center for Global Change Science,built a climate model that projects changes to the oceans throughout the century.In a world that warms up by 3 ℃,it found that multiple changes to the colour of the oceans would occur.The model projects that currently blue areas with little phytoplankton could become even bluer.But in some waters,such as those of the Arctic,a warming will make conditions riper for phytoplankton,and these areas will turn greener.“Not only are the quantities of phytoplankton in the ocean changing,”she said,“but the type of phytoplankton is changing.”
And why does that matter?Phytoplankton are the base of the food web.If certain kinds begin to disappear from the ocean,Dutkiewicz said,“it will change the type of fish that will be able to survive.”Those kinds of changes could affect the food chain.
Whatever colour changes the ocean experiences in the coming decades will probably be too gradual and unnoticeable,but they could mean significant changes.“It'll be a while before we can statistically show that the changes are happening because of climate change,”Dutkiewicz said,“but the change in the colour of the ocean will be one of the early warning signals that we really have changed our planet.”
1.What is the major cause that directly results in changes in ocean colour?
A.The temperature of sea water.
B.The type and concentration of phytoplankton.
C.The oxygen given off by phytoplankton.
D.The amount of carbon dioxide in the area.
答案B
解析细节理解题。根据第二段中的“Oceancolourvariesfromgreentoblue,dependingonthetypeandconcentrationofphytoplankton.”可知,海洋的颜色从绿色到蓝色不等,取决于浮游植物的种类和浓度。故选B项。
2.What can we learn from the passage?
A.Phytoplankton have been used to control global climate.
B.Dutkiewicz's model aims to project phytoplankton changes.
C.Phytoplankton play a declining role in the marine ecosystem.
D.Oceans with more phytoplankton may appear greener.
答案D
解析细节理解题。根据第四段中的“Butinsomewaters,suchasthoseoftheArctic,awarmingwillmakeconditionsriperforphytoplankton,andtheseareaswillturngreener.”可知在某些海域,气候变暖给浮游植物提供更成熟的条件,而这些水域将会变得更绿。故选D项。
3.What is the main purpose of the passage?
A.To describe the importance of phytoplankton.
B.To explain the effects of climate change on oceans.
C.To introduce a new method to study phytoplankton.
D.To assess the consequences of ocean colour changes.
答案B
解析写作意图题。通过文章的第一段以及最后一段的内容可知,作者写这篇文章的主要目的就是解释气候变化对海洋的影响。故选B项。
B
The snow in Antarctica is turning green and scientists say climate change may be to blame.According to a study at the Cambridge University,microscopic algae blooms across the surface of the snow is slowly turning Antarctica's winter white landscape green.Although microscopic,scientists say they're able to see the “green snow” from space when the algae blooms all together.
Researchers created a large-scale map of green snow algae along the Antarctic coast using a combination of satellite data and on-the-ground observations over the course of two summers.The study found that the green snow algae bloomed in warmer areas where the average temperatures are just above 0℃ during the southern hemisphere's(半球的) summer months from November to February.
“As Antarctica warms,we predict the overall mass of snow algae will increase,” said Dr Andrew Gray,lead author of the paper,and a researcher.Researchers say larger blooms of algae can be found north of the Antarctic and South Shetland Islands,where it can spread to higher ground as the snow melts.
The team also discovered some sea birds and mammals influenced the distribution of algae.Over 60% of algae blooms were found within three miles of a penguin settlement.Scientists hypothesise this may be due to their droppings,which act as a “highly nutritious fertiliser”.
“This is a significant advance in our understanding of land-based life on Antarctica,and how it might change in the coming years as the climate warms,” said Dr Matt Davey in the University of Cambridge's Department of Plant Sciences,who led the study.
4.What is turning the Antarctic snow green?
A.The melting of snow.
B.The blooming algae.
C.The beautiful landscape.
D.The balanced temperature.
答案B
解析细节理解题。根据第一段中的“...microscopicalgaebloomsacrossthesurfaceofthesnowisslowlyturningAntarctica'swinterwhitelandscapegreen.”可知,遍布雪表面的微生物藻类的爆发正在慢慢地将南极洲冬天的白色景观变成绿色。所以南极洲的雪变绿的原因是藻类的爆发。故选B项。
5.Where is microscopic algae most likely to bloom in Antarctica?
A.North of the Antarctic.
B.West of the South Pole.
C.South of the Antarctic.
D.Around the southern hemisphere.
答案A
解析细节理解题。根据第三段中的“ResearcherssaylargerbloomsofalgaecanbefoundnorthoftheAntarcticandSouthShetlandIslands,...”可知,更大的藻类的爆发会在南极洲北部和南设得兰群岛被发现。故选A项。
6.What does the underlined word “hypothesise” in paragraph 4 probably mean?
A.Confirm. B.Support.
C.Assume. D.Warn.
答案C
解析词义猜测题。根据“thismaybeduetotheirdroppings”中的“may”和“dueto”可知,科学家们是在推测和假设原因。故选C项。
7.What can we learn from the text?
A.Penguins feed on microscopic algae.
B.Antarctic algae grow under the snow.
C.Ground observation lasted for four months.
D.Animal droppings contribute to the algae blooms.
答案D
解析细节理解题。文中并未提到企鹅以藻类为食,故A项错;根据第一段中的“acrossthesurfaceofthesnow”可知,藻类覆盖在雪的表面,故B项错;根据第二段中的“...on-the-groundobservationsoverthecourseoftwosummers.”可知,地面观察持续了两个夏天,故C项错;根据倒数第二段中的“thismaybeduetotheirdroppings”可知,藻类的爆发可能是因为企鹅等动物的粪便。故选D项。
C
Most scientists are now certain that global warming is taking place.Gases such as carbon dioxide are creating a warm blanket around Earth.This blanket is trapping heat in the atmosphere,and so raising the temperature of Earth.
In Europe,eight of the last ten years have seen record high temperatures.On the other hand,the countries around the Mediterranean Sea are receiving even less rain than before.In Sub-Saharan Africa the crops are drying out in the fields and people are dying of starvation.In 1999,the southern United States was struck by a serious of destructive(毁灭性的) hurricanes.Scientists expect such trends to continue,and to worsen,if global warming cannot be stopped.
In addition to worrying about rising global temperatures and extreme weather conditions,scientists are closely monitoring sea levels around the world.They are slowly rising,as the northern and southern polar ice caps start to melt.This will have serious consequences for low-lying countries near the sea.Already parts of these places are disappearing under the rising sea water.
According to a new research,one contradictory feature of global warming is that it will probably lead to a period of much colder weather.Scientists base their theory on what happened the last time the world warmed up 8,300 years ago.They have discovered that when the ice melted from the northern polar ice cap it became trapped in a lake in northern Canada.As more ice melted,this lake suddenly burst open,pouring millions of tons of freezing fresh water into the North Atlantic.This flood of water prevented the normal flow of water in the Atlantic,which takes warm water from the tropics(热带地区) north to Europe.When this flow of warm water was cut off,temperatures in Europe dropped by between three and eight degrees over the next 200 years.“That's the concern here,”says Richard Alley,an American climate expert.“The climate hasn't varied much in 8,000 years.But big changes could come back!”
8.What is the overall effect of global warming on Europe?
A.A warmer climate.
B.A decline in rainfall.
C.An increase of hurricanes.
D.A decrease of crop production.
答案A
解析细节理解题。根据第二段中的“InEurope,eightofthelasttenyearshaveseenrecordhightemperatures.”可知,全球变暖带给欧洲的影响是气温升高。故选A项。
9.What is paragraph 3 mainly about?
A.The rising sea level.
B.The melting of icebergs.
C.The increase in disasters.
D.The cause of global warming.
答案A
解析主旨大意题。根据第三段中的“Inadditiontoworryingaboutrisingglobaltemperaturesandextremeweatherconditions,scientistsarecloselymonitoringsealevelsaroundtheworld.Theyareslowlyrising,asthenorthernandsouthernpolaricecapsstarttomelt.”可知,本段主要讲述持续上升的海平面。故选A项。
10.How does the author describe the climate change in Europe 8,300 years ago?
A.By offering statistics.
B.By giving an example.
C.By making comparisons.
D.By analysing the process.
答案D
解析推理判断题。根据最后一段可推测,作者通过分析过程的方法,陈述了8300年前的那次气候变化。故选D项。
11.What can we infer from Richard Alley's words?
A.Global climate change will bring more disasters.
B.Global warming will likely produce a colder climate.
C.Global warming will continue for the next two centuries.
D.Global climate will remain unchangeable in the next 8,000 years.
答案B
解析推理判断题。根据最后一段中的“Whenthisflowofwarmwaterwascutoff,temperaturesinEuropedroppedbybetweenthreeandeightdegreesoverthenext200years.”可推测,RichardAlley的意思是全球变暖可能会导致产生一个更冷的气候。故选B项。
D
Chinese miners have managed to extract “flammable ice” from the seafloor of the South China Sea,according to the Ministry of Land and Resources.“The successful collection of the frozen fuel is a major breakthrough that may lead to a global energy revolution,” said China's Minister of Land and Resources,Jiang Daming.
“Flammable Ice” is methane hydrates (甲烷水合物) with molecules(分子) of methane gas trapped in ice crystals.It can exist only in conditions of very low temperatures and high pressure.One cubic metre of flammable ice is equal to 164 cubic metres of natural gas,according to the US Energy Information Agency.
“It looks like ice crystals,but you see the methane molecules are caged in by the water molecules,” said Associate Professor Praveen Linga from the Department of Chemical and Biomolecular Engineering at the National University of Singapore.In spite of the low temperature,the hydrates are easily flammable as the gas trapped in the ice will catch fire once you bring it to a flame.
The discovery is China's first success in the mining of “flammable ice” following almost twenty years of research and exploration,according to the ministry.The miners managed to extract a daily average of 16,000 cubic metres of gas with high purity from the mining site.
The natural gas hydrate is believed to be the best replacement for natural gas and oil.Moreover,it is environmentally safe and in large reserves,according to the head of the China Geological Survey Bureau,Zhong Ziran.
“Many countries along the Maritime Silk Road have a demand for flammable ice.With the advanced technology we can help solve the energy resources problem and boost (促进) economic development and exchanges between countries,” said Qiu Haijun.
12.What is Jiang Daming's attitude towards China's extracting “flammable ice”?
A.Neural. B.Positive.
C.Indifferent. D.Uncertain.
答案B
解析推理判断题。根据第一段中的“...amajorbreakthroughthatmayleadtoaglobalenergyrevolution...JiangDaming.”可知,JiangDaming对中国提取可燃冰持肯定的态度。故选B项。
13.“Flammable ice” only exists in conditions where 　　　. 
A.the water could be frozen
B.the natural gas or oil is produced
C.the temperatures are low and the pressure is high
D.there is a sea with warm climate like the South China Sea
答案C
解析细节理解题。根据第二段中的“Itcanexistonlyinconditionsofverylowtemperaturesandhighpressure.”可知,可燃冰只在低温高压的条件下才能存在。故选C项。
14.It can be concluded from paragraph 4 that　　　. 
A.it took China great efforts to discover and extract “flammable ice”
B.the mining site of the “flammable ice” is clean
C.16,000 cubic metres of gas could be extracted at most every day
D.it is easy for China to mine “flammable ice” successfully
答案A
解析推理判断题。根据第四段中的“followingalmosttwentyyearsofresearchandexploration”可推断出,中国在发现和开采可燃冰的过程中付出了很大的努力。故选A项。
15.What is the significance of the Chinese major breakthrough of “flammable ice”?
A.It is the most important mining discovery in history.
B.The mining site will attract many tourists.
C.Many countries along the Maritime Silk Road support it.
D.It may lead to a global energy revolution as an alternative fuel.
答案D
解析主旨大意题。本文主要报道了中国在南海连续试采可燃冰中所取得的突破,并预言这一突破可能会引发全球性的能源革命。这一重大突破的重要性在于——可燃冰作为一种可替代能源可能会引发全球性的能源革命。故选D项。
第二节(共5小题;每小题2.5分,满分12.5分)
阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
Ice sheets covering three-quarters of Greenland,the world's largest island,are melting at a fast pace.　16　 Such prediction was made from the findings of an international team of researchers,including representatives from the Danish Meteorological Institute (DMI). 
Climate researcher Ruth Mottram said in a DMI press release,“If global warming continues as before—what we call the high emission scenario,then the temperature will be likely to rise by a further 4.0 to 6.6 degrees by the year 2100.”　17　 And the researchers added that the polar regions are more sensitive to climate change. 
　18　 By using them they can calculate the extent that the melting of Greenland's inland ice would contribute to the global sea level,by examining the unstable relationship between the change in summer temperatures in Greenland and the ice's surface mass-balance over the last 30 years.“Our research shows that we should expect an increase of 10 to 12.5 centimetres in global sea level by the year 2100 as a direct result of increased ice melting and loss of surface mass from the Greenland ice sheet alone,” said Mottram. 
John Cappelen,senior climatologist(气候学家) at DMI and member of the research team,stressed the seriousness of the team's findings and called all people and countries to obey the Paris Agreement as a way to limit the global warming.“　19　 Otherwise we can't limit the global warming,” said Cappelen. 
The Paris Agreement was agreed by the 195 member economies in Paris in 2015,with the goal of reducing global warming.　20　 
A.It's really a pity.
B.Something must happen to our behaviour.
C.We must do something to protect Greenland.
D.However,some countries want to quit the agreement.
E.Such a rise in temperature is significantly greater than we expect.
F.Researchers used the latest global and regional climate modeling tools.
G.By the end of this century,sea levels could rise by about 12.5 centimetres.
答案16.G　17.E　18.F　19.B　20.D
第二部分　语言运用(共两节,满分30分)
第一节(共15小题;每小题1分,满分15分)
阅读下面短文,从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
The last fully complete ice shelf in the Canadian Arctic has collapsed(坍塌).The Milne Ice Shelf is 　21　 Ellesmere Island,Canada.The shelf lost 　22　 40 percent of its area in just two days at the end of July. 
Above normal air temperatures,offshore winds and open water in front of the ice shelf are all parts of the 　23　 for its break-up.The shelf's area shrank by about 80 square kilometres.By comparison,the island of Manhattan in New York 　24　 about 60 square kilometres.Temperatures in the polar area have been 　25　 intense(强烈的).Summer in the Canadian Arctic this year has been 5 degrees Celsius 　26　 the 30-year average.That has 　27　 smaller ice caps,　28　 can melt quickly.As a glacier disappears,more bedrock is left 　29　.This then speeds up the melting　30　.A research camp,including instruments for measuring water flow through the ice shelf,was lost when the shelf at Ellesmere Island collapsed. 
“It was only a 　31　 of time,”said Mark Serreze,director of the National Snow and Ice Data Centre.His study showed the ice caps were　32　 to disappear within five years.Their disappearance was 　33　 last month,when NASA satellite images of the area showed a complete lack of snow and ice.Serreze's 　34　 trip to the Arctic was many years ago.“When I was there in the 1980s,I knew every square inch of those ice caps,”Serreze said.“You have the good 　35　.It's like your first girlfriend.” 
21.A.at the edge of B.in front of
C.at the back of D.at the end of
答案A
解析句意:米尔恩冰架位于加拿大埃尔斯米尔岛的边缘。attheedgeof“在……的边缘”;infrontof“在……的前面”;atthebackof“在……的后部”;attheendof“在……的结尾”。根据常识可知,米尔恩冰架位于加拿大埃尔斯米尔岛的边缘。故选A项。
22.A.rather than B.less than
C.other than D.more than
答案D
解析句意:七月底,仅仅两天时间,冰架面积就减少了40%以上。ratherthan“而不是”;lessthan“少于”;otherthan“除了”;morethan“多于”。根据上文“ThelastfullycompleteiceshelfintheCanadianArctichascollapsed.”可知,加拿大北极地区最后一个完整的冰架崩塌了。由此推知,七月底冰架面积减少了很多。故选D项。
23.A.situations B.conditions
C.elements D.problems
答案C
解析句意:高于正常气温、离岸风和大陆架前的开放水域都是导致其断裂的因素。situation“情况”;condition“条件”;element“要素”;problem“问题”。故选C项。
24.A.combines B.covers
C.evaluates D.obtains
答案B
解析句意:相比之下,纽约的曼哈顿岛占地大约60平方千米。combine“组合,结合”;cover“覆盖”;evaluate“评价”;obtain“获得”。根据“60squarekilometres”可知,此处表示岛屿覆盖的范围。故选B项。
25.A.seriously B.especially
C.naturally D.nearly
答案B
解析句意:极地地区的气温尤其高。seriously“严重地”;especially“尤其”;naturally“自然地”;nearly“几乎”。根据上文“Abovenormalairtemperatures,...”可知,极地地区的气温尤其高。故选B项。
26.A.down B.below
C.up D.above
答案D
解析句意:今年加拿大北极地区的夏季比30年来的平均气温高出5摄氏度。down“向下”;below“在……下面”;up“向上”;above“在……之上”。根据上文“Theshelflost　　　40percentofitsareainjusttwodaysattheendofJuly.”可知,冰架的融化是由于今年的气温比往年更高。故选D项。 
27.A.reduced B.broken
C.threatened D.brought
答案C
解析句意:这已经威胁到了可以迅速融化的小冰盖。reduce“减少”;break“破坏”;threaten“使惊吓”;bring“带来”。根据下文“Thisthenspeedsupthemelting　　　.”可知,加速融化对小冰盖的存在产生了威胁。故选C项。 
28.A.which B.that
C.where D.whose
答案A
解析句意同上。which关系代词,指物;that关系代词,可以指物或者指人;where关系副词,作地点状语;whose关系代词,表示“谁的”。分析句子结构,设空处引导非限制性定语从句,先行词“smallericecaps”在定语从句中作主语,需用关系代词which引导。故选A项。
29.A.uncovered B.different
C.predictable D.spotted
答案A
解析句意:随着冰川的消失,更多的基岩裸露在外。uncovered“裸露的;无覆盖的”;different“不同的”;predictable“可预见的”;spotted“有花点的”。根据“Asaglacierdisappears,...”可知,因为冰川的融化,很多基岩裸露在外。故选A项。
30.A.programme B.progress
C.project D.process
答案D
解析句意:这就加速了融化过程。programme“项目”;progress“进步”;project“方案;工程”;process“过程;进程”。根据“Asaglacierdisappears,morebedrockisleft...”可知,冰川融化,基岩裸露加速了融化的过程。故选D项。
31.A.question B.thing
C.matter D.concept
答案C
解析句意:一切只是时间问题。question“问题”;thing“事情”;matter“问题”;concept“概念,观念”。根据上文“Aresearchcamp,includinginstrumentsformeasuringwaterflowthroughtheiceshelf,waslostwhentheshelfatEllesmereIslandcollapsed.”可知,当埃尔斯米尔岛冰架崩塌时,伴随营地消失的还有测量流经冰架的水流量的仪器。由此推知,此处表示上面的这些事物消失只是时间的问题。故选C项。
32.A.possibly B.likely
C.probably D.surely
答案B
解析句意:他的研究表明,冰盖有可能在五年内消失。possibly“有可能地”;likely“可能;或许”;probably“很可能;大概”;surely“必定;当然”。sb/sthbelikelytodosth为固定短语,意为“有可能做某事”。故选B项。
33.A.simplified B.launched
C.confirmed D.accompanied
答案C
解析句意:上个月,美国国家宇航局的卫星图像显示,该地区完全没有冰雪,这也证实了冰盖消失的事实。simplify“使简化”;launch“发起;发动”;confirm“证实”;accompany“陪伴”。根据“...whenNASAsatelliteimagesoftheareashowedacompletelackofsnowandice.”可知,此处用科技手段证实了冰盖的消失。故选C项。
34.A.research B.search
C.culture D.business
答案A
解析句意:Serreze的北极考察之旅是许多年前的事了。research“调查;研究”;search“搜寻;搜索”;culture“文化”;business“生意”。根据“triptotheArctic”可知,此处表示去极地考察的旅行。故选A项。
35.A.dreams B.ideas
C.attitudes D.memories
答案D
解析句意:你有美好的回忆。dream“梦想”;idea“想法;主意”;attitude“态度”;memory“回忆”。根据上文“WhenIwasthereinthe1980s,Ikneweverysquareinchofthoseicecaps...”可知,根据Serreze的描述,当年的极地考察之旅是美好的回忆。故选D项。
第二节(共10小题;每小题1.5分,满分15分)
阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
China has become the first country to land a spacecraft on the far side of the moon.The unmanned Chang'e-4 probe(探测器)—the name was inspired by an ancient Chinese moon goddess—36.　　　　　　(touch) down last week in the South Pole-Aitken basin.Landing on the moon's far side is 37.　　　　　　　(extreme) challenging.Because the moon's body blocks direct radio communication with a probe,China first had to put a satellite in orbit above the moon in a spot 38. it could send signals to the spacecraft and to Earth.The far side of the moon is of particular 39.　　　　　(interesting) to scientists because it has a lot of deep craters(环形山),more so 40.　　　　　 the familiar near side.Chinese researchers hope to use the instruments onboard Chang'e-4 41.　　　　　(find) and study areas of the South Pole-Aitken basin.“This really excites scientists,”Carle Pieters,a scientist at Brown University,says,“because it 42.　　　　　　(mean) we have the chance to obtain information about how the moon 43.　　　　　　　(construct).” Data about the moon's composition,such as how 44.　　　　　　 ice and other treasures it contains,could help China decide whether 45.(it) plans for a future lunar(月球的) base are practical. 
答案36.touched　37.extremely　38.where　39.interest 40.than　41.to find　42.means　43.is constructed 44.much　45.its
第三部分　写作(共两节,满分40分)
第一节(满分15分)
假如你是李华,“世界海洋日”即将来临。请代表校学生会用英语写一封倡议书,呼吁大家保护海洋动物。内容包括:
1.发出倡议的缘由;
2.如何保护海洋动物;
3.号召大家一起行动。
注意:
1.词数80左右;
2.可适当增加细节,以使行文连贯;
3.参考词汇:世界海洋日 World Oceans Day
 
 
 
 
参考范文
Dear fellows,
With the approaching of World Oceans Day,we would like to call on everyone to protect marine animals.
Each year,millions of marine animals die from hunting and environmental pollution.Therefore,effective measures should be adopted before things get worse.It is necessary to avoid purchasing products made from any endangered marine animals.Besides,please don't throw rubbish into the ocean which will pollute marine animals' living conditions.
It is time that we joined our hands to preserve marine animals and create a harmonious home for them.
The Students' Union
January 12th
第二节(满分25分)
阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。续写词数应为150左右。
Mama and I spend mornings cleaning up the dirt that blows into our house.Mama says all the dust is due to the drought,not only here in the Oklahoma panhandle(狭长地带) but all over the Great Plains.
The dirt sifts into everything.It covers our clothes.We have to wash the dishes before each meal.It also slips into the automobiles horn(喇叭).Although Papa has fixed it,he fears the dust from the road will ruin the motor.So we have to walk to school.
On the way to school,my sister,Faye,and I wear kerchiefs over our mouths so we don't breathe in the dirt.On days when the air is so bad that they close the school,we stay home and help Mama put sheets over the windows.But the dirt always finds a way in.
Last Sunday,there was no dirt in the air,only bright spring sunshine and a clear blue sky.After church,Papa headed out to the field to check on the cattle while Mama started dinner.Faye and I played in the yard.The temperature suddenly dropped—it felt good.The heat had been building since dawn.
Then Mama shouted from the house,“Iris,you and Faye get inside.Be quick!”
I looked to the west and saw a huge black cloud of dust,like thick smoke pouring out from a chimney.All the birds flew away.“Faye,go with Mama!” I shouted,“I'll warn Papa.”
Faye raced towards the house.The storm hit so fast,I barely saw her climb the porch steps.Fine sand heaved against my face and in an instant the day turned into night.I stumbled over our bicycles left carelessly in the yard.I screamed for Papa,hoping my voice would lead him back.
The dirt and sand stung my skin like a thousand bees.I needed to get to shelter.Covering my face with one hand,I felt my way towards the automobile and I opened the door.Dirt flew in with me as I pulled the door closed.Papa was
still out there!I needed to help him find the automobile.Worried as I was,I managed to calm myself down.
IwasfiguringoutwhattodowhenIcaughtsightoftheswitchforthefrontlightsandthehorn.  
 
 
 
 
 
 
 
SuddenlyPapa'sfaceappearedatthewindow.  
 
 
 
 
 
 
 
参考范文
IwasfiguringoutwhattodowhenIcaughtsightoftheswitchforthefrontlightsandthehorn.They made some rays,but would Papa see them in thick darkness?I pushed the horn again and again,hoping Papa would hear it.I was waiting silently in the automobile,but there was nothing except the wind.I became more and more desperate.
SuddenlyPapa'sfaceappearedatthewindow.With clothes covered his face,he opened the door and climbed onto the seat next to me.He coughed and wiped his eyes with dirty hands,then pulled me into his arms.I hugged Papa and cried.Papa asked,“Where are your mother and Faye?” I said,“They are in the house.” Papa nodded,“Good.” Finally,the huge black cloud of dust cleared off and the dirt started to settle.We went home as Mama and Faye walked out.I cried,tears of joy because our family had survived the horrible storm.