A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16℃.Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover, these areas would reflect more heat into the atmosphere，warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters all over the world.
In the past hundred years, humans have begun destroying rainforests in search of three major resources (資源): land for crops, wood for paper and other products, land for raising farm animals. This action affects the environment as a whole. For example，a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
There are two main reasons for this. Firstly, when people cut down trees, generally they can only use the land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right now, but in the long run it actually reduces the world’ s wood supply.
Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.
小題1:Why did humans destroy rainforests in the past hundred years?
A．They tried to get crops and paper
B．They needed other products
C．They wanted to raise farm animals
D．They aimed to get three major resources.
小題2:Rainforests can help to adjust the climate because they________.
A．reflect more heat into the atmosphere
B．bring about high rainfall throughout the world
C．rarely cause the temperature to drop lower than 16℃
D．reduce the effect of heat from the sun on the earth
小題3:What does the word “this” underlined in the third paragraph refer to?
A．We will lose much more than we can gain.
B．Humans have begun destroying rainforests.
C．People have a strong desire for resources.
D．Much carbon dioxide comes from burning rainforests.
小題4:It can be inferred from the text that________.
A．we can get enough resources without rainforests
B．there is great medicine potential in rainforests
C．we will grow fewer kinds of crops in the gained land
D．the level of annual rainfall affects wind patterns
小題5:What might be the best title for the text?
A．How to Save Rainforests
B．How to Protect Nature
C．Rainforests and the Environment
D．Rainforests and Medical Development

小題1:D
小題2:D
小題3:A
小題4:B
小題5:C
文章講述的是熱帶雨林和環(huán)境的關(guān)系。
小題1:細(xì)節(jié)題。根據(jù)第二段第一句humans have begun destroying rainforests in search of three major resources 可知D正確。
小題2:細(xì)節(jié)題。根據(jù)第一段第3行because they can take in heat from the sun and adjust the climate.可知D正確。
小題3:推理題。這里的this是指上文的we will suffer much more than we will benefit.我們失去的要比我們獲得的多。
小題4:推理題。根據(jù)文章最后一段尤其是第二句. More than 25% of the medicines we use today come from plants in rainforests.可知熱帶雨林可以給我們提供很多的藥物，故B正確。
小題5:主旨大意題。文章講述的是熱帶雨林和環(huán)境的關(guān)系。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

Most people regard zoos as safe places for animals, where struggles such as difficulty finding food and avoiding predators（捕食性動物） don't exist. Without such problems, animals in zoos should live to a ripe old age. But that may not be true for the largest land animals on Earth. Scientists have known that elephants in zoos often develop diseases, joint problems and behavior changes. Sometimes, they even become unable to have babies.
To learn more about how captivity(監(jiān)禁) affects elephants, a team of international scientists led by Mason, a biologist, compared the life spans of female elephants born in zoos with female elephants living outdoors in the wild. Zoos keep detailed records of all the animals in their care, documenting factors such as birth dates, illnesses, weight and death. These records made it possible for the researchers to analyze 40 years of data on 800 elephants in zoos.
The team found that female elephants born in zoos lived an average of 16.9 years. Their wild counterparts（同類事物） who died of natural causes lived an average of 56 years——more than three times as long.
Scientists don't yet know for sure why wild elephants seem to live so much better than their zoo-raised counterparts. Mason thinks stress and obesity(肥胖) may be to blame. Zoo elephants don't get the same kind of exercise as they do in the wild, and most are very fat. Elephant social lives are also much different in zoos than in the wild, where they live in large groups.
Another finding from the study showed that elephants born in zoos were more likely to die earlier than elephants captured in the wild and brought to zoos. Mason suggests stress in the mothers in zoos might cause them to have babies that are less likely to survive.
The study raises some questions about acquiring more elephants to keep in zoos. While some threatened and endangered species living in zoos reproduce successfully and keep healthy populations, that doesn't appear to be the case with elephants.
小題1:The text tells us that zoo elephants are different from other zoo animals because they________
A．develop health problems.
B．1ive to a ripe old age.
C．a(chǎn)re not afraid of predators.
D．have difficulty eating food.
小題2:What do the scientists find in their research?
A．Female elephants live longer than male elephants.
B．Female zoo elephants die earlier than their wild counterparts.
C．Female zoo elephants live longer than their wild counterparts.
D．Both elephants in zoos and those in the wild live in large herds.
小題3:Which of the following does the author suggest in the last paragraph?
A．Zoo-born elephants should be attended more carefully
B．Elephants are no longer an endangered species.
C．It may not be a wise policy to keep elephants in the zoo.
D．Zoos should keep more animals except elephants.
小題4:Which of the following can be the best title?
A．Comparison between two species of elephants
B．Longer lives for wild elephants
C．Female elephants suffer from poor health.
D．Longer lives for zoo animals.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The space shuttle Discovery has had a long and busy career. For 27 years, it has worked for NASA, carrying astronauts to space and back on 39 missions. On March 9, 2011, after returning from its final voyage, the world’s most traveled spaceship was retired.
A crowd of shuttle workers, reporters and schoolchildren waited to greet Discovery at Kennedy Space Center in Cape Canaveral, Florida. Three minutes before noon, they watched as the shuttle appeared in the sky and made one last touchdown. “For the final time: wheels stop,” Discovery’s commander Steven Lindsey said when the shuttle rolled to a stop.
Discovery’s final trip was to the International Space Station (ISS), a giant space lab in the sky. Discovery’s crew took care of the last U.S. construction project at ISS. They delivered 10 tons of supplies for the ISS. The six-person crew also dropped off an unusual companion for ISS’s researchers: a human-like robot named Robonaut 2. Astronauts will assemble（組裝）R2 at the ISS over several months.
Now, NASA is winding down its shuttle programme. NASA is to begin work on new spaceships that can travel longer distances. Discovery’s retirement is the first of three. Endeavor, another shuttle, is scheduled to make its final voyage soon. And Atlantis’s last trip is planned for the end of June.
Museums across the country have requested the retired shuttles. The Smithsonian’s Air and Space Museum, in Washington, D.C., was the lucky recipient（接收者）of Discovery. The museum’s collection contains hundreds of NASA artifacts.
Where will the other shuttles go? You’ll have to wait to find out. NASA will announce its decision on April 12, the 30th anniversary of the first space shuttle launching. Stay tuned!
小題1:As part of the final mission, Discovery’s crew___________.
A．carried researches to space
B．a(chǎn)ssembled the Robonaut 2 at the ISS
C．brought supplies to the ISS
D．went on a spacewalk
小題2:The underlined phrase “winding down” in Paragraph 4 probably means _________.
A．improvingB．endingC．changingD．testing
小題3:What can we infer from the text?
A．Discovery completed 39 missions during its two decades of space travel.
B．The ISS is a big project and six researchers live on the station.
C．American space exploration will focus on longer missions.
D．The shuttles Endeavor and Atlantis will make their last missions next month.
小題4:According to the text, we can learn about ___________.
A．people’s opinions of Discovery’s retirement
B．the government’s concern about the shuttles’ future
C．the shuttles’ final homes after retirement
D．museums’ great interest in the retired shuttles

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

BEIJING--Alarmed by the overreaching ambitions of many Chinese provinces to grow at all costs, China’s top economic chief is calling on officials to calm down and spare a thought for the environment．
Zhang Ping, who heads China’s National Development and Reform Commission, the central economic planning agency, said only five or six of China’s 30 provinces are targeting annual economic growth of 8 percent or 9 percent．
The remaining provinces are aiming for growth rates of more than 10 percent this year, with some wanting to double economic output in the coming five years．
“China has a planned energy supply of about 4 billion cubic tons of coal equivalent（等量的）for the next five years, and this is not enough to meet demands for economic growth to double,” he was quoted as saying on the news portal Sina．Com．
Beijing is increasingly concerned with the ambitions of Chinese provinces across the country to chase high growth despite the central government’s urgent request for a more moderate and sustainable（可持續(xù)的）pace of expansion．
Years of rapid economic growth has taken a toll on China’s environment, with Beijing trying to remove some of the damage now．It has an annual growth target of 7 percent for the next five years, well down from last year’s 10 percent．
Zhang said Beijing has asked local governments to take into account the supply of “energy, environment, water and land” to set more reasonable growth targets．
小題1:Which of the following statements is TRUE according to the passage?
A．Many Chinese provinces are alarmed by Beijing．
B．Zhang Ping is an expert and economic chief from www. Sina.Com．
C．The supply of the coal in China is not sufficient(足夠的) for the next five years．
D．Few Chinese provinces are aiming for economic growth rates of less than 10%．
小題2:The underlined phrase “taken a toll on” in the sixth paragraph means “_________”．
A．looked forward toB．paid attention to
C．caused damage toD．a(chǎn)ttached importance to
小題3:The general idea of the whole passage can be that ________．
A．China’s economy is developing
B．China’s top chief places more emphasis on the environment
C．a(chǎn)ll Chinese provinces should slow down their economic growth rates
D．economic high growth should go hand in hand with environmental protection
小題4:What could be the best title for the news?
A．Economic DevelopmentB．Energy Supply
C．Sustainable DevelopmentD．Environment protection

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Trying to leave work at the office is proving to be a challenge for many British workers，with research showing that heavy workloads，conflicts and bosses all make an appearance in dreams．
Work-related issues are the number one topic featuring in dreams，with colleagues invading shut．eye time more than celebrities．More than 20 per cent surveyed admitted that they regularly dream about their boss．One in three dreams about work when they are stressed in their job and a quarter stated that they dream about a colleague if there was a conflict with them earlier that day．
Of the 2,000 people surveyed，20 per cent dreamed more if they were under pressure or stressed．The research found that the average person dreams most nights，with only 12 per cent saying they never dream．However, dreams often leave people confused，with 52 per cent saying they do not make sense and 60 per cent wishing they could know what they mean．
Commenting on the survey carried out by One Poll for Premier Inn hotels，dreams expert Davina MacKail said：“Whether we are asleep or awake．a(chǎn) problem with a colleague or stress at work can really affect us．More than half of the nation stated that their dreams don’t make sense so I have worked with Premier Inn to make a Dream Dictionary to help dreamers to understand why they dream what they do and what those dreams mean．”
A spokesman for Premier Inn said：“It is really important to try to unwind after a hard day at work but that is easier said than done if something is playing on your mind．”
小題1:What Can we infer about the British workers?
A．Most of their dreams are work-related．
B．Some of them dream about work every night．
C．They dream of their colleagues more than their boss．
D．Their dreams involve work more than anything else．
小題2:The survey shows that most people   ．
A．dream more under pressure
B．never dream at all
C．don’t understand their dreams
D．interpret their dreams well
小題3:Davina MacKail expects people to use his Dream Dictionary when they   ．
A．have had a dream
B．want to prevent dreams
C．feel stressed and need relaxation
D．do research about dreams
小題4:According to the spokesman for Premier Inn，it’s hard to relax if we    ．
A．dream about work while asleep
B．keep thinking hard
C．have sounds ringing in the mind
D．sleep in a noisy environment

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The Pacific island nation of Nauru used to be a beautiful place．Now it is an ecological disaster area．Nauru’s heartbreaking story could have one good consequence — other countries might learn from its mistakes．
For thousands of years, Polynesian people lived in the remote island of Nauru, far from western civilization．The first European to arrive was John Fearn in 1798．He was the British captain of the Hunter, a whaling ship．He called the island Pleasant Island．
However, because it was very remote, Nauru had little communication with Europeans at first．The whaling ships and other traders began to visit, bringing guns and alcohol．These elements destroyed the social balance of the twelve family groups on the island．A ten-year civil war started, which reduced the population from 1,400 to 900．
Nauru’s real troubles began in 1899 when a British mining company discovered phosphate (磷酸鹽)on the island．In fact, it found that the island of Nauru was nearly all phosphate, which was a very important fertilizer for farming．The company began mining the phosphate．
A phosphate mine is not a hole in the ground; it is a strip mine．When a company strip-mines, it removes the top layer of soil．Then it takes away the material it wants．Strip mining totally destroys the land．Gradually, the lovely island of Nauru started to look like the moon．
In 1968, Nauru became one of the richest countries in the world．Every year the government received millions and millions of dollars for its phosphate．
Unfortunately, the leaders invested the money unwisely and lost millions of dollars．In addition, they used millions more dollars for personal expenses．Soon people realized that they had a terrible problem — their phosphate was running out．Ninety percent of their island was destroyed and they had nothing．By 2000, Nauru was financially ruined．Experts say that it would take approximately $433,600,000 and more than 20 years to repair the island．This will probably never happen．
小題1:What might be the author’s purpose in writing the text?
A．To seek help for Nauru’s problems．
B．To tell a heartbreaking story of a war．
C．To show the importance of money
D．To give a warning to other countries
小題2:What was Nauru like before the Europeans came?
A．Rich and powerful B．Peaceful and attractive
C．Modern and openD．Greedy and aggressive
小題3:The ecological disaster in Nauru resulted from _______．
A．phosphate overmining      B soil pollution
C．farming activity             D．whale hunting
小題4:Which of the following was a cause of Nauru’s financial problem? 
A．Its phosphate mining cost much money
B．It spent too much repairing the island
C．Its leaders misused the money
D．It lost millions of dollars in the civil war．
小題5:What can we learn about Nauru from the last paragraph?
A．The ecological damage is difficult to repair．
B．The leaders will take the experts’ words seriously．
C．The island was abandoned by the Nauruans
D．The phosphate mines were destroyed

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

After years of hearing drivers complain about scratches on their cars, Japan's Nissan Motor Company has officially announced the next big thing---a paint that not only resists scratches and scrapes, but actually repairs itself within a few days.
The new material, developed by Nippon Paint Company, contains an elastic rubbery-like resin(彈性樹脂) that is able to heal minor marks caused by car wash equipment, parking lot encounters, road debris (石頭碎片) or even on-purpose destruction. The automaker admits its results vary depending on the temperature and the depth of the damage, but adds this is the only paint like it in the world, and tests prove it works. Minor scratches, the most common type, are said to slowly fade over about a week. And once they're gone, there is no trace that they were ever there. The special paint is said to last for at least three years after it is first applied, but there is no word yet on whether more can be added after that period.
Nissan claims car washes are the worst offenders for this type of damage, accounting for at least 80 percent of all incidents. But the complete auto-healing won't come without scratching your wallet. The vehicle maker notes the special paint adds about $ 100 U.S. to the price of a car. It plans to use its new chemical mixture only on its X - Trail SUVs in Japan for now, as it looks for a more widespread presentation. And while plans to offer the feature overseas haven't been made yet, if it's a hit there, you can be almost sure market forces will drive it to these shores, as well.
小題1:From the article, we can find that_______.
A．the paint has already been used on cars by now
B．it beats other products of its kind in its lengthy effect
C．car damage is mainly caused by scratches and scrapes
D．marketing this paint in Europe is not under way
小題2:The paint used on cars can______.
A．last 3 years before it is re-applied again
B．fade only in a few days
C．help to protect cars from minor paint damage
D．reduce car scrape incidents to 20 percent
小題3:What can be inferred from the article?
A．The paint was developed by Nissan Motor Company.
B．The paint might work better in summer than in winter.
C．The mark on the car could disappear as soon as the paint is applied.
D．The paint is very popular in Japan.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Kuss Middle School serves students in Fall River, Mass. , a former mill town that has struggled economically for decades. Students at Kuss have struggled, too, usually falling short of making the academic progress required under the No Child Left Behind law.
Then, last year, the school experimented with extending the school day. Teachers got paid at a higher hourly rate.
Students weren't thrilled at first with leaving school at 4:15 p.m. instead of at 2:20 p.m. But the added hours gave them more time for physical education and let them select special interest classes. By the end of the year, student scores had risen by enough to enable Kuss to make the progress required under the federal No Child Left Behind law.
The only surprise is that more districts haven't lengthened school schedules set decades ago to accommodate (適應(yīng)) a farm economy rather the information economy of today.
School days
The USA ranks 36th of 40 industrialized nations in average weekly instructional time.
Selected countries:
1) Thailand--30.5 hours  2) Korea--30.3 hours  7) China--26.5 hours
14) France--24.6 hours  15 ) UK--24.6 hours
16) Mexico--24.2 hours  23 ) Japan--23.8 hours
26)Canada--23.6 hours  36)USA--22.2 hours  40)Brazil--19 hours
New research suggests the time is ready for a change:
Matched against 39 other developed countries, the United States is near the bottom in the rankings of average weekly instructional time in school.  Measured over 12 years, students in the top-scoring countries spend the equivalent of a full extra year in school.
US students perform poorly on math and science tests compared to their international peers, according to a US Education Department comparison released earlier this month. In math, American 15-year-old scored near the bottom among the study's 30 developed countries.
Most countries that boost the number of minutes spent on math instruction find pay offs in improved math scores, according to a study released this month by the Brookings Institution. Small in creases in the school day are more effective than a longer school year, the report concluded.
The most encouraging news about the benefits of extending the school day comes from Massachusetts, where an experiment with 10 schools, including Kuss, appears to be working. Those 10 schools lengthened their instructional days by 25% and boosted their state scores in math, English and science at all grades.
Perhaps the concept won't work everywhere. Certainly, it won't instantly be popular. But it's obvious that a problem exists or that adding class time seems to help.
小題1:What is the main idea of the above passage?
A．Experiments with extended school hours produce academic gains.
B．Kuss Middle School sets a good example for US education.
C．Academic progress has achieved under the No Child Left Behind law.
D．Information age calls for more instructional lime at all schools.
小題2:A longer school day is suggested for the following reasons except that _________.
A．students from many developed countries spend more time at school
B．American students do a bad job at science subjects
C．teachers are paid at a higher rate with time added
D．a(chǎn) longer school day works better than a longer school year
小題3:Which statement is true of Kuss Middle School?
A．Kuss Middle School lies in where a farm economy is changing to an information one.
B．Kuss Middle school has joined the federal "No Child Left Behind" progrann
C．Neither teachers nor students are happy with the longer school day.
D．Adding class time functions at Kuss Middle School.
小題4:The writer has expressed ____________.
A．a(chǎn) positive attitude towards adding school time
B．a(chǎn) negative attitude towards adding school time
C．a(chǎn) changing attitude towards adding school time
D．a(chǎn) right attitude towards adding school time

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

You can improve your child’s hearing memory considerably（在很大程度上）. Once his hearing memory has been greatly improved, he'll be able to use and remember what he listens to in class. The success of these suggestions depends upon your ability to use your child’s natural desire to get involved in games he finds simple and fun.
A good way to begin is to read aloud a sentence from a book suitable for your child's reading age. Then ask your youngster to repeat the sentence back to you correctly. Next, reread the sentence, leaving out a particular word. See if your child can identify the word you left out. At the beginning use only simple sentences. Gradually, increase the length of the sentences. Make sure you don’t rush things along too quickly, or your child may become discouraged and tired of the game.
Take your child shopping with you often. He’s to remember a list of items you want to buy in the supermarket. First , ask him to remember only a few things. Then, as he shows increased ability to remember, make the list longer and longer. Praise him often and warmly when he shows increased ability to remember things. He'll become proud of his ‘good’ memory and will happily play the game.
Encourage your child to learn easy and short poems. As his ability to do this becomes stronger, encourage him to remember longer poems. Do the same with songs.
小題1:The suggestions will be successful if____.
A．you find simple and funny games for your child
B．you can stimulate（激發(fā)）your child’s interest in the activity
C．you force your child to get involved in more practice
D．you improve your own hearing memory first
小題2:The purpose of asking your child to repeat what you say is __.
A．to practice his pronunciation
B．to develop his reading skills
C．to help him remember what he hears
D．to play a simple game he may find fun
小題3:The third paragraph mainly talks about ___.
A．a(chǎn)nother way to improve your child’s hearing memory
B．how you should take you child shopping with you
C．how to remember the items you want to buy
D．the way you help your child do shopping
小題4:The last sentence ‘Do the same with songs’ means you should encourage your child to learn and remember ___.
A．songs in the same way as he does with poems.
B．poems in the same way as he does with songs
C．the poems and songs which are similar in meaning
D．those songs that have the same meaning as poems
小題5:Who are the supposed readers of this passage?
A．Children.B．Parents.C．Teachers.D．Psychologists.

查看答案和解析>>

同步練習(xí)冊答案