Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino (厄爾尼諾). The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.
One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe(津巴布韋), Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication(出版物)Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.
小題1:El Nino is known as ___.
A.the changing of the weather in southern Africa
B.the warming of waters in the Pacific Ocean
C.the weather which brings drought(旱災)to Africa
D.the weather phenomenon(現(xiàn)象)that brings heavy rains to Africa
小題2:Scientists study El Nino in order that ___.
A.they can provide a kind of early warning to the place that will suffer from drought
B.they can tell why Zimbabwe has little or no rain
C.they can do some research work in this field.
D.they can put all this information into their computers.
小題3:Which of the following is TRUE according to the passage?
A.Scientists come to understand how El Nino appears.
B.Three scientists from the USA work on this subject.
C.Southern Africa suffered a serious drought and many people died from hunger.
D.El Nino has something to do with Zimbabwe’s poor crops.
小題4:Which of the following is NOT true according to the article?
A.The computer is used in this research work.
B.Scientists know when an El Nino appears by means of the computer program.
C.The scientists published their results of the research work.
D.Nature is the name of the article written recently by the scientists.
小題5:What’s the best title for this passage?
A.Appearance of El Nino is Predictable(可預測的)
B.Drought in Zimbabwe
C.Early Warning System
D.Weather in Africa

小題1:B
小題2:A
小題3:D
小題4:D
小題5:A

試題分析:科學家一直在研究厄爾尼諾現(xiàn)象。太平洋的部分水域變暖導致氣候的變化。雖然不能完全理解,但是可以運用這方面的知識預測世界上不同地區(qū)的未來。把這一現(xiàn)象引起的災難減少到最小。
小題1:細節(jié)理解題。根據(jù)文章第一句話可知,厄爾尼諾現(xiàn)象是太平洋的水域變暖。所以選B。
小題2:細節(jié)理解題。根據(jù)文章最后一句話可知,研究的目的是早想良策預防挨餓情況的發(fā)生。選A。
小題3:推理判斷題。根據(jù)They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor.可知,厄爾尼諾和津巴布韋的農(nóng)業(yè)欠收有關系。選D。
小題4:推理判斷題。文中沒提及文章的名字,所以D錯,選D。
小題5:主旨大意題。文章介紹了對厄爾尼諾現(xiàn)象的研究以及采取相應的措施來應對。所以選A 。
練習冊系列答案
相關習題

科目:高中英語 來源:不詳 題型:閱讀理解

We produce 500 billion of plastic bags in a year worldwide and they are thrown away polluting oceans,  killing wildlife and getting dumped in landfills where they take up to 1000 years to decompose. Researchers have been unsuccessfully looking for a solution.
The 16-­year ­old Canadian high school student, Daniel Burd, from Waterloo Collegiate Institute,
has discovered a way to make plastic bags degrade(分解) in as few as 3 months, a finding that won him first prize at the Canada-Wide Science Fair, a $10 000 prize, a $20 000 scholarship, and a chance to revolutionize a major environmental issue.
Burd's strategy was simple: Since plastic does eventually degrade, it must be eaten by microorganisms (微生物). If those microorganisms could be identified, we could put them to work eating the plastic much faster than under normal conditions.
With this goal in mind, he ground plastic bags into a powder and concocted(調制) a solution of household chemicals, yeast(酵母) and tap water to encourage microbes growth. Then he added the plastic powder and let the microbes work their magic for 3 months. Finally, he tested the resulting bacterial culture on plastic bags, exposing one plastic sample to dead bacteria as a control. Sure enough, the plastic exposed to the live bacteria was 17% lighter than the control after six weeks.
The inputs are cheap: maintaining the required temperature takes little energy because microbes produce heat as they work, and the only outputs are water and tiny levels of carbon dioxide.
“Almost every week I have to do chores and when I open the closet door, I have piles of plastic bags falling on top of me. One day, I got tired of it and I wanted to know what other people are doing with these plastic bags. The answer: not much. So I decided to do something myself.” said Daniel Burd.
小題1:Daniel Burd won first prize at the Canada-Wide Science Fair because________.
A.he found a new kind of microorganism
B.he contributed much to environmental protection
C.he found a way to degrade plastics in shorter time
D.he could encourage microbes growth in an easier way
小題2:Daniel Burd exposed one plastic sample to dead bacteria to ________.
A.make the live bacteria work better
B.test how effective his method was
C.know which bacteria worked faster
D.control the temperature in the process
小題3:Maintaining the required temperature takes little energy because ________.
A.plastics can get hot easily
B.microbes can produce heat themselves
C.much carbon dioxide is produced
D.the temperature can be controlled
小題4:Daniel Burd got his idea from ________.
A.his school textbookB.the failure of researchers
C.his everyday workD.the practice of other people

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

The Healthy Habits Survey (調查) shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.
1. How many times did you brush your teeth yesterday?
Finding: A full 33% of seniors brush their teeth only once a day.
Step: Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.
2. How many times did you wash your hands or bathe yesterday?
Finding: Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day-half of the number doctors recommend.
Step: We touch our faces around 3,000 times a day-often inviting germs (病菌) to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.
3. How often do you think about fighting germs?
Finding: Seniors are not fighting germs as well as they should.
Step: Be aware of germs. Do you know it is not your toilet but your kitchen sponge (海綿) that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.
小題1:What is found out about American seniors?
A.Most of them have good habits.
B.Nearly 30%of them bathe three days a week.
C.All of them are fighting germs better than expected.
D.About one third of them brush their teeth only once a day
小題2:Doctors suggest that people should wash their hands          .
A.twice a dayB.three times a day
C.four times a dayD.eight times a day
小題3:Which of the following is true according to the text?
A.We should keep from touching our faces.
B.There are less than 300 types of bacteria in the mouth.
C.A kitchen sponge can carry more germs than a toilet.
D.We should wash our hands before touching a door handle.
小題4:The text probably comes from             .
A.a(chǎn) guide bookB.a(chǎn) popular magazine
C.a(chǎn) book reviewD.a(chǎn)n official document

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Most animals have little connection with animals of a different kind, unless they hunt them for food. Some­times, however, two kinds of animals come together in a partnership(伙伴關系) which does good to both of them. You may have noticed some birds sitting on the back of sheep. This is not because they want a ride, but because they find easy food in the parasites(寄生蟲)on sheep. The sheep allow the birds to do so be­cause they remove the cause of discomfort. So although they can manage without each other, they do better together.
Sometimes an animal has a plant partner. The rela­tionship develops until the two partners cannot do with­out each other. This is so in the corals(珊瑚)of the sea. In their skins they have tiny plants which act as “dustman”, taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from light so that they cannot live normally, the corals will die.
小題1:Some birds like to sit on a sheep because _________.
A.they can eat its parasites
B.they consider the sheep as their shelter
C.they enjoy traveling with the sheep
D.they find the position most comfortable
小題2:The underlined word “they” in the first paragraph refers to _______.
A.birds and parasitesB.sheep, birds and parasites
C.parasites and sheepD.birds and sheep
小題3:It can be learnt from the text that the coral depends on the plants for ________.
A.comfortB.lightC.oxygenD.food
小題4:What does the second paragraph mainly discuss?
A.Some plants depend on each other for food.
B.Some animals and plants develop their relationship easily.
C.Some animals and plants depend on each other for existence.
D.Some animals live better together.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

If you are planning to study in the United States, you need to consider several factors. Everyone has different opinions about where is the best place to live in. Also, the best places to live in are not always home to the best schools. Finally, many schools specialize in different areas of study. The Massachusetts Institute of Technology, for example, is a great school for computer science and technology-related fields of study. However, if you want to study oceanography(海洋學), your interests may be better served by attending school in a place that is on a coastline or near the ocean.
Now I am sure that you know which schools are considered the best in the country. So I will tell you about which states I believe are the best to live in.
California is a nice state. Northern California specifically has very good weather. Los Angeles in southern California is another story, though. Life in LA is full of excitement and fast, and sometimes dangerous. As for me, I enjoyed the time I spent in Massachusetts, Virginia and Maryland and these states have a lot of history and culture. The weather is not as perfect as Northern California, but it is still quite nice. My favorite area of America is the Mid-west. Middle America, I think, is home to the true American sense of values. In addition, there are many good universities there.
Also, you need to think about your likes and dislikes and then research the various states. You like sunshine and hate snow? Then you probably won’t like the Midwest or even the Northeast. Open space, nature and peace? Then you probably should stay away from America’s large cities. Are you interested in government? Then Washington D. C. is the only place for you. Whatever you decide, put some thought into it. The place you live in could be the difference between a great study-abroad experience and a state of great suffering on earth.
小題1:What, according to the author, should be considered first if you want to study in the USA?
A.The climateB.The scenery
C.The study conditionD.The living condition
小題2:What is California like?
A.California is the best place to live in.
B.California is the worst place to live in.
C.California is a state with the largest city.
D.California is a state with different climates.
小題3: If you study in Middle America, you can probably _______.
A.find the best universities
B.feel the real character of the nation
C.meet the most famous professors there
D.face more difficulties
小題4: What can we conclude from the text?
A.All American famous universities lie in nice places.
B. Los Angeles is the most dangerous city in the USA.
C. Washington D.C. is the political centre of the USA.
D. It is always raining in the Midwest of the USA.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

In nature, you may see many insects and animals of different colors. Have you ever wondered why?
Locusts (蝗蟲)are super delicious food for birds, but it is not always an easy job for birds to catch them. It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies(敵人). The reason is that the colors of locusts change with the colors of crops (莊稼). When crops are young, locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.
Brown bears, tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies (蝴蝶)and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive, they have to hide themselves in the daytime and appear only at night.
Have you ever noticed some even stranger acts(行為)? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over, its enemies will find themselves in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.
小題1:According to the passage, most soil insects ______
A.do not have bright colors
B.change their colors with the soil
C.do not live in a dark and wet environment.
D.eat colorful insects like butterflies and bees.
小題2:What’s the meaning of the underlined word “survive” in the passage?
A.繁殖B.產(chǎn)卵C.覓食D.生存
小題3:What is the main idea of this passage?
A.Some insects and animals have different skills.
B.Some insects and animals are cleverer than we think.
C.Some insects and animals use colors to protect themselves.
D.Some insects and animals can get used to the environment easily.

查看答案和解析>>

科目:高中英語 來源:不詳 題型:完形填空

A successful scientist is generally a good observer.  He makes full 36  of the facts he observes.  He doesn’t accept ideas which are not  37   on obvious facts,  and therefore refuses to accept authority as the only   38   for truth.  He always  39    ideas carefully and makes experiments to prove them.
The rise of    40    science may perhaps be considered to    41   as far back as the    42    of Roger Bacon,  the wonderful philosopher of Oxford,  who live    43    the years 1214 and 1292.  He was probably the first in the Middle    44    to suggest that we must learn science    45    observing and experimenting on the things around us,  and he himself    46   many important discoveries.
Galileo,  however,  who lived more than 300 years later (1564-1642),  was the greatest of several great men,     47    in Italy,  France,  Germany,  or England,  began by    48    to show how many important    49    could be discovered by observation.  Before Galileo,  learned men believed that large bodies fell more    50    towards the earth than small ones,     51    Aristotle said so.  But Galileo,  going to the    52     of the leaning Tower of Pisa,  let fall two  53    stones and proved Aristotle was wrong.  It was Galileo’s    54    of going direct to Nature,  and proving our    55    and theories by experiment,  that has led to all the discoveries of modern science.
小題1:
A.useB.timeC.speedD.trust
小題2:
A.workedB.basedC.livedD.written
小題3:
A.reasonB.causeC.a(chǎn)dviceD.result
小題4:
A.thinksB.checksC.hasD.learn
小題5:
A.naturalB.physicalC.a(chǎn)ncientD.modern
小題6:
A.dateB.keepC.lookD.take
小題7:
A.studyB.timeC.yearD.birth
小題8:
A.bothB.eachC.betweenD.a(chǎn)mong
小題9:
A.SchoolsB.AgesC.DaysD.Count
小題10:
A.inB.withC.onD.by
小題11:
A.didB.madeC.tookD.gave
小題12:
A.whoB.whenC.thatD.where
小題13:
A.waysB.degreesC.levelsD.chance
小題14:
A.truthsB.problemsC.peopleD.subjects
小題15:
A.slowlyB.rapidlyC.lightlyD.heavily
小題16:
A.a(chǎn)lthoughB.becauseC.whenD.If
小題17:
A.placeB.footC.topD.ceiling
小題18:
A.bigB.smallC.equalD.unequal
小題19:
A.spiritB.skillC.theoryD.discovery
小題20:
A.plansB.opinions C.worldD.a(chǎn)bility

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Humans have sewn by hand for thousands of years. It was said that the first thread was made from animal muscle and sinew (肌腱). And the earliest needles were made from bones. Since those early days, many people have been involved in the process of developing a machine that could do the same thing more quickly and with greater efficiency.
Charles Wiesenthal, who was born in Germany, designed and received a patent on a double-pointed needle that eliminated the need to turn the needle around with each stitch (縫合) in England in 1755. Other inventors of that time tried to develop a functional sewing machine, but each design had at least one serious imperfection.
Frenchman Barthelemy Thimonnier finally engineered a machine that really worked. However, he was nearly killed by a group of angry tailors when they burned down his garment factory. They feared that they would lose their jobs to the machine.
American inventor Elias Howe, born on July 9, 1819, was awarded a patent for a method of sewing that used thread from two different sources. Howe’s machine had a needle with an eye at the point, and it used the two threads to make a special stitch called a lockstitch. However, Howe faced difficulty in finding buyers for his machines in America. In frustration, he traveled to England to try to sell his invention there. When he finally returned home, he found that dozens of manufacturers were adapting his discovery for use in their own sewing machines.
Isaac Singer, another American inventor, was also a manufacturer who made improvements to the design of sewing machines. He invented an up-and-down-motion mechanism that replaced the side-to-side machines. He also developed a foot treadle (腳踏板) to power his machine. This improvement left the sewer’s hands free. Undoubtedly, it was a huge improvement of the hand-cranked machine of the past. Soon the Singer sewing machine achieved more fame than the others for it was more practical. It could be adapted to home use and it could be bought on hire-purchase. The Singer sewing machine became the first home appliance, and the Singer company became one of the first American multinationals.
However, Singer used the same method to create a lockstitch that Howe had already patented. As a result, Howe accused him of patent infringement (侵犯). Of course, Elias Howe won the court case, and Singer was ordered to pay Howe royalties (版稅). In the end, Howe became a millionaire, not by manufacturing the sewing machine, but by receiving royalty payments for his invention.
小題1:Barthelemy Thimonnier’s garment factory was burned down because __________.
A.people did not know how to put out the fire
B.Elias Howe thought Thimonnier had stolen his invention
C.the sewing machines couldn’t work finally
D.workers who feared the loss of their jobs to a machine set fire
小題2:Why did the court force Isaac Singer to pay Elias Howe a lifetime of royalties?
A.Because the judge was against Singer for his unfriendly attitude.
B.Because Howe had already patented the lockstitch used by Singer.
C.Because Singer had borrowed money from Howe and never repaid it.
D.Because Singer and Howe had both invented the same machine.
小題3:Which of the following would be the best title for this passage?
A.A Stitch in Time Saves Nine
B.The Case between Howe and Singer
C.Patent Laws on the Sewing Machine
D.The Early History of the Sewing Machine

查看答案和解析>>

科目:高中英語 來源:不詳 題型:閱讀理解

Our senses aren't just delivering a strict view of what’s going on in the world; they're affected by what’s going on in our heads. A new study finds that hungry people see food-related words more clearly than people who've just eaten.
Psychologists have known for decades that what's going on inside our head affects our senses. For example, poorer children think coins are larger than they are, and hungry people think pictures of food are brighter. Rémi Radel of University of Nice Sophia-Antipolis, France, wanted to investigate how this happens.
Does it happen right away as the brain receives signals from the eyes or a little later as the brain’s high-1evel thinking processes get involved. Radel recruited 42 students with a normal body mass index. On the day of his or her test, each student was told to arrive at the lab at noon after three or four hours of not eating. Then they were told there was a delay. Some were told to come back in 10 minutes; others were given an hour to get lunch first. So half the students were hungry when they did the experiment and the other half had just eaten.
For the experiment, the participant looked at a computer screen. One by one, 80 words flashed on the screen for about l/300th of a second each. They flashed at so small a size that the students could only consciously perceive. A quarter of the words were food-related. After each word, each person was asked how bright the word was and asked to choose which of two words they’d seen-a food-related word like cake or a neutral word like boat. Each word appeared too briefly for the participant to really read it.
Hungry people saw the food-related words as brighter and were better at identifying food- related words. Because the word appeared too quickly for them to be reliably seen, this means that the difference is in perception, not in thinking processes, Radel says. "This is something great to me. Humans can really perceive what they need or what they strive for. From the experiment, I know that our brain can really be at the disposal of our motives and needs. "Radel says.
小題1:Why was there a delay on the day of the experiment?
A.Because hungry people needed time to fill their stomach.
B.Because Radel wanted to create two groups of testers, hungry and non-hungry.
C.Because noon was not the right time for any experiment.
D.Because Radel needed time to select participants in terms of body mass index.
小題2:What does the writer want to tell us?
A.Human’s senses aren’t just delivering a strict view of what’s going on in the world.
B.What’s perceived by our senses affects our way of thinking.
C.Human brains can really be at the disposal of our motives and needs.
D.Thinking processes guarantee the normal functions of our senses.
小題3:What can we infer from the passage?
A.42 participants are too small a number for a serious investigation.
B.An experiment with hungry and non-hungry participants is not reliable.
C.Our thinking processes are independent of our senses.
D.Humans can perceive what they need without involving high-level thinking processes

查看答案和解析>>

同步練習冊答案