题目列表(包括答案和解析)
Whenever human populations have lived in forest areas, they have always cut down trees which they used for a number of purposes, for housing and ships and served as a source of heating fuel and timber. Growth of cities often meant expansion into forest areas, while even more trees were removed to provide space for agriculture. With the growing demand for paper, vast quantities of trees have also been cut down for paper production. These factors, along with many others, have been contributing to a dangerous phenomenon known as deforestation.
In the last 5,000 years, humans have reduced forest from roughly 50 percent of the earth’s land surface to less than 20 percent. Most of this original, or old growth, forest cover is concentrated in three large areas: the Canadian and Alaskan boreal forest, the boreal forest of Russia, and the tropical forest of the northwestern Amazon Basin and the Guyana Shield. These areas comprise almost 70 percent of the world’s remaining original forest cover. In most places, the rate of deforestation is increasing, with the alarming result of 16 million hectares disappearing worldwide every year.
Loss of forest does not just mean the decline of natural resources. There are several other factors that make deforestation seriously harmful to both the human and natural worlds. One of them is changes in the global climate. For example, forest clearance is releasing substantial volumes of carbon dioxide (CO2) into the atmosphere as vegetation is burnt or decays. It has been suggested that this is a significant factor in global warming. Moreover, about 10 percent of the world’s tree species are in danger of extinction as a result of deforestation. Deforestation also threatens biological diversity through the destruction of wildlife habitats, which endangers a number of animal species and leads to their potential disappearance. Species are particularly easy to extinction in tropical rainforests because many species have few individuals per unit area, which makes reproduction more difficult. Finally, since forests play an important role in storing water and stabilizing soil, deforestation and the resulting change in land use cause soil erosion (腐蚀) and other forms of land degradation.
The passage discusses all of the following EXCEPT the ________.
A. causes of deforestation B. consequences of deforestation
C. management of deforestation D. rate of deforestation
The word “diversity” in the last paragraph probably means “________”.
A. variety B. expansion
C. development D. advantage
Why does the author mention fuel and timber in Paragraph 1?
A. To explain the rate of deforestation.
B. To compare them with housing and ships.
C. To show the dangers of deforestation.
D. To illustrate the causes of deforestation.
Which of the following sentences summarizes Paragraph 3 best?
A. Deforestation threatens biological diversity.
B. Deforestation has many harmful consequences.
C. Deforestation causes changes in global climate.
D. Deforestation should be stopped.
D
Sitting on the peaceful coast of the Calapagon Islands. Ecuador , watching the sun move quietly into the sea, you shouldn’t forget the Charles Darwin (1809 – 1882) arrived here in 1835. He famous work. On the Origin of Species. You can certainly follow Darwin’s footsteps and enjoy a trip from four to seven days to the islands.
The islands are centainly a paradise (天堂) for wildlife, as there are no natural killers on the islands and the number of beais and visitors is under govenment control.Though you cannot walk freely as Darwin die hour 200 years ago ,esch day is as impressive as it could be.
The most well crown animal of the Calapagos is the giant tortoisc ( 巨型陆龟),which can be seen moving slowly around the highlands of Sanra Cruz,the second largest island in the suchipelago.Some of these creatures are so old that they might have been seen in their youth by Darwin himself.
Despite strict control over activities and timing,you stay on the Galapagos will be remembered as a chain of incomparable pictures;diving with sea how that wim and play within inches of you; feeling small shaks touch you feet as you swim and ,most magically , seeing a with and her bady surface with great breath of air.
Travleing between the islands and observing the wildlife that so inspired Darwin , you will fell as though you are getting a special view of an untouched world .At night you will sleep on board the ship , leaving the wildlife in complete occupation of the islands, which are as undisturbed now ai they have been since the beginning of time.
68.What do we know about Darwin’svisit to the istands.
A.studkd afleient cnt cpeatures on the islands.
B.He completed his famous book on the istands.
C.He was touched by the geographs of the istands.
D.He was attracted by well known animals of the islands.
69.Whieh of the fotlowing plavs a role in making the islands “a pradise for wikllife”?
A.Animals on theis lands feed on grass.
B.Lood go mthent forbids killing wildlife.[来源:学+科+网Z+X+X+K]
C.Fccple nninot visit the islands as they wash.
D.fourists are not allowed to torch the animals.
70．Your stay on the islands will be most impressive mainly because of .
A．the beautiful sea views
B．Darwin’s inapiring trip
C．a clder view of animals
D．various daring activities
71．Which of the following would be the best title for the passage?
A．A Unique Attraction for Wildlife Lovers
B．Calapagos as a Paradise for Adventurers
C．Charles Darwin as a Symbol of Calapagos
D．A Successful Example of Wildlife Protection
T-shirts out; uniforms in
School uniforms（制服） are becoming more and more popular across the U.S.A. That’s no surprise, because they offer many benefits. They immediately end the powerful social sorting and labeling (标记) that come from clothing. If all students are dressed in the same way, they will not pay too much attention to their clothing, and some of them will not be laughed at for wearing the “wrong” clothes.
Some people are against the strict rule of school uniforms, but they do not realize that students already accept a kind of rule — wanting to look just like their friends. The difference is that the clothing students choose for themselves creates social barriers(障碍); school uniforms tear those barriers down.
As in other places, uniforms remind the wearers of their purposes and duties. For example, when a man or woman puts on a police uniform, he or she becomes, for a time, the symbol (象征) of law and order. The uniform means to the wearer his or her special duties and sends the same message to everyone the wearer meets. People with different jobs wear uniforms of one kind or another. For students, the school uniform reminds them that their task for the six or seven hours they are in school is to get an education.
Some parents are unhappy about uniforms, saying that school uniforms will affect their children’s “creativity.” First, the clothes students choose to wear do not necessarily express their individuality (个性). They just copy their classmates. Second, students have the rest of the day to be as creative as they like. While they’re in school, their job is to master reading, writing, and maths; this should take up all the creativity they have. Mastery of those skills will be good for the students to build up their creativity in every way.
【小题1】From the passage we learn that uniforms in general .
| A．prevent the wearers from being laughed at |
| B．help the wearers keep their duties in mind |
| C．are seen as a symbol of power |
| D．help to create social barriers |
| A．they fail to realize that students have accepted the uniforms |
| B．they believe that uniforms will make students less creative |
| C．they don’t agree that uniforms can remove social barriers |
| D．they think that school uniforms are too popular |
| A．it makes no difference whether to wear school uniforms or not |
| B．students’ individuality may not come from school education |
| C．students’ creativity is related to the clothes they choose |
| D．school uniforms help to create equality among students |
| A．they can stop the powerful social sorting and labeling. |
| B．if all students are dressed in the same way, they will not pay too much attention to their clothing. |
| C．uniforms can remind the wearers of their purposes and duties |
| D．school uniforms will affect their children’s creativity. |
What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigation, how to discover information, is important to everyone. The scientist, however, goes one step further; he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration(实证) must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at the theory through mathematics. The accuracy(正确性) of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(计算) that may test his investigations
1. What makes a scientist according to the passage?
A. The tools he uses. B. His ways of learning
C. The way he uses his tools D. The various tools he uses
2. “…knowing how to investigation, how to discover information, is important to everyone.”
The writer says this to show ___________.
A. the importance of information
B. the difference between scientists and ordinary people.
C. the importance of thinking
D. the difference between carpenters and ordinary people
3. A sound scientific theory should be one that _________.
A. works under one set of conditions at one time and also works under the same conditions at other times
B. doesn’t allow any change even under different conditions
C. Can be used many times under different conditions
D. Can be used for many purposes
4.What is the main idea of the passage?
A. Scientists are different from ordinary people.
B. The Theory of Relativity.
C. Exactness is the core (核心) of science.
D. Exactness and way of using tools are the keys to making of a scientist.
Societies all over the world name places in similar ways. Quite often there is no official naming ceremony but places tend to be called names as points of reference by people. Then an organized body steps in and gives the place a name. Frequently it happens that a place has two names: One is named by the people and the other by the government. As in many areas, old habits died hard, and the place continues to be called by its unofficial name long after the meaning is lost.
Many roads and places in Singapore（新加坡） are named in order that the pioneers will be remembered by future generations. Thus we have names such as Stamford Road and Raffles Place. This is in keeping with traditions in many countries ---- in both the West and the East.
Another way of naming places is naming them after other places. Perhaps they were named to promote friendships between the two places or it could be that the people who used to live there were originally from the places that the roads were named after. The mystery is clearer when we see some of the roads named in former British bases. If you step into Selector Airbase you will see Piccadilly Circus ---- obviously named by some homesick Royal Air Force personnel.
Some places were named after the activities that used to go on at those places. Bras Basah Road is an interesting example, “Base Basah” means “wet rice” in Malay（马来语）. Now why would anyone want to name a road “Wet Rice Road”? The reason is simple. During the pioneering days, wet rice was laid out to dry along this road.
A few roads in Singapore are named by their shapes. There is “Circular Road” for one. Other roads may have part of their names to describe their shapes, like “Paya Lebar Crescent”. This road is called a crescent（月牙） because it begins on the main road, makes a crescent and comes back to join the main road again.
36. We learn from Paragraph 1 that _____.
A. the government is usually the first to name a place
B. many places tend to have more than one name
C. a ceremony will be held when a place is named
D. people prefer the place names given by the government
37. What does the underlined phrase “die hard” in Paragraph 1 probably mean?
A. Change suddenly.
B. Change significantly.
C. Disappear mysteriously.
D. Disappear very slowly.
38. Which of the following places is named after a person?
A. Raffles Place.
B. Selector Airbase.
C. Piccadilly Circus.
D. Paya Lebar Crescent.
39. Bras Basah Road is named _______.
A. after a person
B. after a place
C. after an activity
D. by its shape
40. What can be inferred from the passage?
A. Some place names in Singapore are the same as in Britain.
B. Some places in Singapore are named for military purposes.
C. The way Singaporeans name their places is unique.
D. Young Singaporeans have forgotten the pioneers.
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