Farmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature . One important form of soil conservation is the use of windbreaks . Windbreaks are barriers formed by trees and other plants with many leaves . Farmers plant them in lines around their fields .
Windbreaks stop the wind from blowing soil away . They also keep the wind from destroying or damaging crops . They are very important for growing grains , such as wheat . There have been studies done on windbreaks in parts of West Africa , for example . These found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection .
However , windbreaks seem to work best when they allow a little wind to pass through . If the wall of trees and plants stops wind completely , then violent air motions will take place close to the ground . These motions will lift soil into the air where it will be blown away .
For this reason , a windbreaks is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line . An easy role to remember is that windbreaks can protect areas up to ten times the height of the tallest trees in the windbreaks .
These should be at least two lines in each windbreak . One line should be large trees . The second line , right next to it , can be shorter trees and other plants with leaves . Locally grown trees and plants are best for windbreaks .
1.What is the best title for the passage?
A.Building a windbreak to protect soil
B.Building a windbreak to protect crops
C.Using a windbreak to improve grains
D.Using a windbreak to improve plants
2.In the fifth paragraph the author tells us windbreaks______.
A.do not work at all
B.do not stop wind fully
C.will not take place
D.will not allow wind to pass through
3.According to the passage , which of the following statement is wrong ?
A.Windbreaks are barriers .
B.Windbreaks can be used to make fences .
C.In general , there are two lines in all in every windbreak .
D.Windbreaks can protect areas .

小題1:C
小題2:B
小題3:C
略
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


More perhaps than any other European nation, the Swiss have got used to looking after foreign travelers. As early as the 18th century, wealthy French, Germans and Italians were treating the country as an amusement center while, in the 19th century, it became the major holiday playground for the British nobles. Today, it attracts visitors from all over the world.
The Swiss are clear about the importance of tourism to their economy, which makes up about eight percent of the Gross Domestic Product, and helps industry greatly. Managers of hotels from all over the world go to Switzerland to learn how to do the job, and a high standard can be expected from the great majority of the country’s hotels, most of which are small and pride themselves on personalized service. Public transport is the best in Europe. Both the Swiss Federal railways and the private railways are fully electric-powered, and the total network consists of about 5,000 kilometers of track.
Under the Fly Baggage system passengers can check luggage in at 116 railway stations and have it automatically transferred to their flight. The national highway system is equally well planned, and the mountain roads offer views of some of the country’s most breathtaking scenery. Also serving the mountains is an effective system of railways and cable ways, while more than 160 passenger cars cross the lakes and rivers. Hiking in the mountains is equally popular with Swiss nationals and foreign visitors. For those who want to view the country from a great height without having to climb the mountain themselves, it is always possible to take in the view from a balloon.
１. Compared with other European countries, Switzerland ________.
A. places more importance on entertainment
B. thinks more about foreign travelers
C. has more convenient public transport
D. has more five-star hotels
２. According to the passage, Switzerland is now visited by ________.
A. wealthy French people               
B. rich Germans and Italians
C. British nobles                      
D. people from various countries
３. According to the passage we learn that ________.
A. most of the hotels in Switzerland are big
B. all the hotels in Switzerland offer exactly the same service
C. most of the hotels in Switzerland offer first class service
D. the hotels in Switzerland are accustomed to learning from the rest of the world
４. The Fly Rail Baggage system is a service to transport your luggage between the railway station and ________.
A. the airport                        B. the hotel   
C. the motorway station     D. the cable ways
５. The passage mainly tells us about ________.
A. scenery in Switzerland             
B. the life in Switzerland
C. tourism in Switzerland               
D. the transportation in Switzerland

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


So I’m driving the lovely and patient older daughter to work. At 7 a. m., she pushes the seat
warmer button as her new Honda zooms across L. A., the City of Padded Shoulders.
"Oh, look, I’m low on gas," she says.
First, we pick up her boss, then we pick up her other boss. They are all headed to Staples Center for some awards show. My daughter does something in public relations, I’m not sure what. But when this show comes along, she gets very busy.
"In the past two nights I’ve gotten, like, seven hours sleep," she notes, the implication being that I sleep all the time, which is pretty much true.
In Los Feliz, a dashboard light confirms that we are, indeed, low on fuel. This does not perturb my daughter.
"Don’t worry, we’ll get there," she says.
My daughter says nothing about getting back home, which is my job. I’ve just agreed to drop her off, so she can avoid traffic later. My task is simple, though now full of uncertainty.
I don’t know how I ended up dropping my daughter and her bosses off at 7 a.m. on a Sunday. I just know that J.D. Salinger may now be dead, but I still feel like Holden Caulfield -- at the mercy of too many yammering adults.
Now, I’ve had mixed luck with adults.
Apparently, my daughter’s job in PR is to keep everyone happy while telling the truth as much as possible. I sent her to college to study that. Now she is an expert.
"After you drop us off, you can get gas," my daughter assures me.
I have been her chauffeur for 26 years. By the time she was 3, I’d snapped her into a car seat some 14,000 times. I took her to seventh-grade dances, ski trips, college.
Even after all that, we continue to have a civil relationship, sort of a queen-mum-and-her-
driver sort of dynamic. When I screw up, she just raises her pretty chin and snorts. It’s very British.
By the way, my daughter now has a nicer car than I do, which is a sign she is doing well. Or, as with so many young people, she is up to her hoop earrings in consumer debt.
1．Which of the following statements in NOT true about the author’s daughter?
A．She is fashionable.   B．She always tells the truth.
C．She is doing well in her work.       D．She lives a fast-paced life.
2．The author’s tone suggests that_________.
A．he is feeling left behind when his daughter has grown up and begun adult life
B．he is content with his grown daughter
C．he does not like his daughter’s bosses
D．he will not believe his daughter any more
3．It can be concluded from the passage that_________.
A．the author won’t have any difficulty in getting gas
B．the daughter cares for her father a lot
C．the author has done a lot to help his daughter get where she is 
D．the British people have pretty chin and snort often
4．By referring to J. D. Salinger and Holden Caulfield, the author is most probably_________.
A．recalling his daughter’s childhood
B．mentioning his family members who are now dead
C．comparing his situation to a scene in a famous literary work
D．telling a story about his daughter’s friends
5．What is the best title for this passage?
A．A PR’s Busy Life
B．Relationship Between Dad and Daughter
C．A Loving Father
D．Go Ahead and Fill Her up, Dad

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


A massive earthquake and tsunamis killed 350 people in one Chilean coastal town, doubling the total death number on Sunday as the government tried to get aid to hungry survivors and stop looting(搶劫).
President Michelle Bachelet said at least 708 people had been killed and called for calm as people desperate for food and water looted stores in some areas worst hit by Saturday’s 8.8-magnitude quake, one of the world’s biggest in a century. The earthquake that shook Chile on Saturday morning was “50 times bigger than the one of Haiti.” The earthquake in Chile was far stronger than the one that struck Haiti last month - yet the death number in Haiti, a Caribbean nation, was much higher.
The reasons are simple. Chile is wealthier and infinitely better prepared, with strict building codes, robust emergency response and a long history of handling seismic catastrophes. No living Haitian had experienced a quake at home when the Jan. 12 disaster crumbled their poorly constructed buildings.
Television images showed houses washed away by swirling waters, cars tossed into shattered buildings and boats lifted into the streets in coastal towns including Pelluhue and Constitucion, where 350 deaths alone were reported.
“It’s an enormous disaster ... there’s a growing number of missing people,” Bachelet said, adding that food and medical aid was being sent to help the roughly 2 million people affected by the quake. Chile is making great efforts to deal with a formidable task caused by the earthquake how to provide temporary shelter for so many people.
A lack of water, food and fuel sharpened the hardship for the hundreds of thousands of people left homeless, and widespread disruption to the power supply threatened to hamper (妨礙) Chilean industry’s recovery. In the hard-hit city of Concepcion, about 310 miles south of Santiago, the government imposed a night-time curfew (宵禁令) in Concepcion and the Maule region on Sunday in a bid to stop looting.
Police used tear gas and water blast guns to disperse a crowd of looters carrying off food and electrical appliances from one supermarket in Concepcion. Television images showed people stuffing groceries and other goods into shopping trolleys. “People have gone days without eating,” said Orlando Salazar, one of the looters at the supermarket. “The only option is to come here and get stuff for ourselves.” On the second day of the most serious natural disaster to hit Chile in decades, rescuing survivors from the ruins had been quickly replaced by the hard challenge of helping them. People overseas have been deeply impressed by earthquake relief efforts by the Chilean government.
1. There are several reasons why the loss of lives in the Chile earthquake was comparatively low EXCEPT __________.
A. improvements had been made in the constructed buildings.
B. Chile is always well prepared for the coming earthquake.
C. large number of Chile residents had gone oat for a holiday.
D Chile has rich experience in dealing with this disaster.
2. The underlined word “formidable” in the fifth paragraph probably means ________.
A. difficult          B. glorious                       C. light                     D. original
3. According to the passage, what is the most pressing task in the earthquake-hit areas?
A. rescuing survivors
B. providing temporary shelter and food for the victims
C. burying dead bodies
D. clearing away the ruins
4. The author’s main purpose in writing the passage is to ____________.
A. call on international aid agencies to go to Chile to help.
B. tell us how to deal with the coming disaster.
C. show how the people of Chile rebuild their country after the big disaster.
D. tell us something about the enormous earthquake in Chile.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


A team of researchers recently created a robot that can repair itself. The newly designed machine can sense injury to itself and adapt. That ability sets the new robot apart from earlier machines. Because the robot can recover from unexpected damage, it may be especially useful in exploring unfamiliar places. “There is a need for planetary robotic rovers(流浪者) to be able to fix things on their own,” says Josh Bongard, one of the device’s creators. “Robots on other planets must be able to continue their mission without human help if they are damaged and cannot communicate their problem back to Earth.”
A typical robot functions according to a computer program, but the new robot works differently. First, sensors in its four legs observe the robot’s movements and signals to its built-in computer. From the information it collects, the robot creates its own programs that allow it to adapt to different situations. For example, when the researchers shortened one of the robot’s legs, the smart machine simply adjusted its way of walking—it used three legs instead of four.
The researchers are looking for other places to put the resilient(迅速恢復(fù)) robot to work. One possible spot is the ocean floor. That dark and dangerous undersea terrain(地帶) might be a good choice for a robot the scientists call the Starfish. “We never officially named the robot, but we usually refer to it as the Starfish, even though a real starfish has five rather than four legs,” says Bongard. “Also, a real starfish is much better than our robot at recovering from injury, because it can actually regrow its legs.” Scientists have created robots that help humans in many ways: by exploring space, fighting fires, and even performing surgery.
1. The newly designed robot is different from the former ones because it ___________.
A. can communicate with people on the earth about their problems
B. works according to a certain computer program
C. can find problems itself and get used to the new environment
D. can explore unfamiliar places
2. An example is given in the second paragraph in order to explain that the new robot ___________.
A. is used to create new programs                        B. has typical robot functions
C. has sensors to observe its movements              D. can adapt to new conditions
3. What might be the best title of the passage?
A. How does the Starfish Robot work                B. Do-It-Yourself Robot Repair
C. Robots Designed to Work On Other Planets    D. New Robot Helping Us In Many Ways
4. Which of the following is True about the Starfish?
A. It has more than four legs.                               B. It hasn’t been officially named.      
C. It can regrow its legs quickly.                    D. It has started to work on the ocean floor.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


China’s telecommunications supervisor has given long-awaited third-generation, or 3G mobile
phone licenses(執(zhí)照) to three mobile operators. The Ministry of Industry and Information Technology said China's biggest mobile operator, China Mobile, was given a license for TD-SCDMA, the domestically-developed 3G standard. k#
Wang Jianzhou, President of China Mobile said the company had already started construction of new networks to cover all cities by 2011. “After our testing operation of the network which started from last April, we have seen that the new technology has developed into maturity (成熟). By this June, we will finish the second stage of the network construction which covers 28 cities around the country. ”
The other two main carriers, China Telecom and China Unicorn, received respectively licenses for the 3G standards of US-developed CDMA2000 and Europe’s WCDMA. All the three operators expressed an active attitude on the future competition and cooperation in the field of 3G mobile.
The 3G high-speed networks can handle faster data downloads, allowing handset users to make video calls and watch TV programs.
Officials expect that there could be about 280 billion yuan, or about 40 billion dollars of direct investment in new networks over the next two years, an effective measure to boost(提高) the domestic demand and perfect telecom market competition.
1. The 3G standard developed in China is ______. 
A. SLEDMA       B. CDMA2000     C. TD-SCDMA       D. WCDMA
2. How soon will the new networks cover most parts of China?
A. In half a year.    B. In one year.      C. In two years.       D. In three years.
3. According to the president of China Mobile, ______.           
A. 3G mobile phone has developed into maturity
B. the network construction has been finished
C. the network has covered 28 cities in China
D. the second stage of the network hasn't started
4. Which of the following statements is true?
A. More and more companies will receive licenses for the 3G standards.
B. With 3G high-speed networks, users can watch different programs at the same time.
C. Not all of the three operators think well of the future competition of 3G mobile.
D. The operators will spend a great amount of money first before earning more money.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Over the past century, all kinds of unfairness and discrimination(歧視) have been made illegal. But one popular form continues to exist, that is alphabetism (字母排序法). This, for those as yet unaware of such a disadvantage, refers to discrimination against those whose surnames (姓氏) begin with a letter in the lower half of the alphabet.
It has long been known that the cars of a taxi firm called AAAA have a big advantage over Zodiac cars when customers look through their phone directories. Less well known is the advantage that Adam Abbot has in life over Zoe Zysman. English names are fairly spread between the halves of the alphabet. Yet a quite large number of top people have surnames beginning with letters between A and K.
Thus the American presidents and vice-presidents have surnames starting with B and C separately and 26 of those before George Bush took office (including his father) had surnames in the first half of the alphabet against just 16 in the second half. Even more striking, six of the seven heads of government of the G7 rich countries are alphabetically advantaged (Berlusconi, Blair, Bush, Chirac, Chretien and Koizumi ). The world’s three top central bankers (Greenspan, Duisenberg and Hayami) are all close to the top of the alphabet, even if one of them really uses Japanese characters. The same case are the world’s five richest men (Gates, Buffet and so on).
Can this merely happen by chance? At the start of the first year in primary school, teachers seat pupils alphabetically from the front, to make it easier to remember their names. So shortsighted Zysman gets stuck in the back row, and is seldom asked the improving questions by those teachers. At that time the alphabetically disadvantaged may think they have had a lucky escape. Yet the result may be worse qualifications, because they get less attention, as well as less confidence in speaking publicly.
The unfairness continues. At university graduation parties, the ABCs proudly get their awards first. However, by the time they reach the Zysmans most people are a little tired. Lists of job interviews and conference speakers and attendees all tend to be drawn up alphabetically, and their readers lose interest as they plough through them.
1. What does the author intend to show with AAAA cars and Zodiac cars?
A. An example of competition of two kinds of cars.    B. Some advantages of AAAA cars in the taxi firm.
C. An example of unfairness caused by alphabetism.   D. Some disadvantages of Zodiac cars in the taxi firm.
2. What can we infer from the first three paragraphs?
A. The alphabet is to blame for the failure of Zoe Zysman.
B. In both East and West, names are important to success.
C. Customers often pay a lot of attention to companies’ names.
D. The discrimination in alphabetism can be found in many areas.
3. The fourth paragraph suggests that         .
A. alphabetically disadvantaged students often escape from class
B. teachers should pay equal attention to all their students
C. questions are often put to the more intelligent students
D. students should be seated according to their eyesight
4. Which of the following is true according to the passage?
A. VIPs in the western world gain a great deal from alphabetism.
B. People with surnames beginning with N to Z are often ill – treated.
C. Putting things alphabetically may lead to unintentional unfairness.
D. The movement to get rid of alphabetism still has a long way to go.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


第三部分 閱讀理解（共20小題，每題2分，滿分40分）
The writing of Shakespeare are today little read by young people in Britain．His young readership is limited to those who choose to study literature at university．
Shakespeare’s work, together with most other classics, is seen as remote, and written in a 400-year- old version of English that is about as inviting as toothache．
Still, in British schools, it is necessary to study the poet, and when something is made compulsory, usually the result is boredom, resentment（憎恨） or both．
This was my experience of the classics at school．But when I reached my late teenage years, I had a change of heart．Like every other young person since the dawn of time, the world confused me．I wanted answers, so I turned to books to find them．
I went on to take a PhD in literature and have taught it in Britain and China．I have never regretted it．There is something in literature that people want, even if they don’t read books．You see this in the popularity of TV and movie adaptations of great works, the recent film version of Jane Austen’s Pride and Prejudice being a case in point．These popular adaptations may help increase people’s interest in the classics．
Reading a simplified Romeo and Juliet may perhaps lead to a reading of Shakespeare’s actual plays．If that is the case, then I welcome the trend．But do not make the mistake of thinking that it is the same thing．Shakespeare is a poet．His greatness is in his language．Reading someone else’s rewriting of his works is like peeling a banana, throwing away the fruit, and eating the skin．Take on the original．It really is worth the effort．
1．Which of the following is true according to the passage?
A．The language used in classics is no longer in use today．
B．British students usually find compulsory reading dull．
C．Only those studying literature read Shakespeare’s works．
D．For British people, Shakespeare’s works are no longer classics．
2．According to the passage, the writer _____ ．
A．has liked literary classics since an early age
B．was forced to read the classics for a PhD
C．turned to literature to seek answers in his teens
D．thinks only people who read books like literature
3．The underlined phrase “a case in point” in Paragraph 5 is closest in meaning to “_____”．
A．a(chǎn) great hit                   B．a(chǎn) good example
C．a(chǎn) movie adaptation               D．a(chǎn) popular phenomenon
4．What does the writer intend to tell us in the last paragraph?
A．The fruit of a banana is more useful than its skin．
B．The rewriting trend does more harm than good．
C．Readers should try to read the original versions．
D．Readers need to learn the language in the classics．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


M: How are your new neighbors, Nancy?
W: They seem nice enough, but they have a son who’s driving me
crazy.
M:    6  
W: He comes home every night around 10 with his car window rolled
down and radio turned up really loud.    7   But by then Brian and Lisa are wide awake.
M: Oh, no.
W: Oh, yes. Sometimes it takes us until midnight just to get them to
settle down again.
M:    8  
W: We haven’t even really met them yet except to say a quick hello.
M: You are not going to like them when you do meet them, I dare say.
W: I know, but I feel stupid complaining.    9   I’m just not getting
enough sleep and neither are the children.
M:    10  
W: Yeah.
M: Then you could mention that the hardest thing at present is getting
your children to sleep at night.
A．Have you tried talking to them?
B．What do you mean?
C．Actually, they didn’t say anything.
D．Maybe you could ask about their son and they’ll be sure to ask about yours.
E. Well, you know how early I have to get up to be here at the office.
F. Don’t get your hopes too high!
G. It stops as soon as he turns the car off.

查看答案和解析>>

同步練習(xí)冊(cè)答案