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It has been shown that children who smoke have certain characteristics. Compared with non-

smokers they are more rebellious, their work deteriorates as they move up school, they are more likely to leave school early, and are more often delinquent and sexually precious. Many of these features can be summarized as anticipation of adulthood.

There are a number of factors, which determine the onset of smoking, and these are largely psychological and social. They include availability of cigarettes, curiosity, rebelliousness, appearing thought, anticipation of adulthood, social confidence, the example of parents and teachers, and smoking by friends and older brothers and sisters.

It should be much easier to prevent children from starting to smoke than to persuade adults to give up the habit once established, but in fact this has proved very difficult. The example set by people in authority, especially parents, health care workers, and teachers, is of prime importance. School roles should forbid smoking by children on the premises. This role has been introduced at Summerhill School where I spent my schooldays.

There is, however, a risk of children smoking just to rebel against the rules, and even in those schools which have tried to enforce no smoking by corporal punishment there is as much smoking as in other schools. Nevertheless, banning smoking is probably on balance beneficial. Teachers too should not smoke on school premises, at least not in front of children.

In this passage the author puts an emphasis on ______.

A.the effect of smoking among children

B.the difficulty in preventing children from smoking

C.the reasons why children start smoking among children

D.the measures to ban smoking among children

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更多“It has been shown that childre…”相关的问题
第1题
Which of the following best conveys the' idea that man has been careless and unconcerned i
n his relationship with nature?

A.He has exploited the earth's resources.

B.He has shown little understanding of nature's ways.

C.He has abused the earth's resources.

D.He has not appreciated nature's beauty and benefits sufficiently.

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第2题
You seem to take a keener interest in the subject has ever been shown before.A.thanB.which

You seem to take a keener interest in the subject has ever been shown before.

A.than

B.which

C.that

D.as

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第3题
The topic sentence in Paragraph 3 is "What has been unusual about this boom is th
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第4题
According to the text, it is upsetting that ______.A.the flu-catching is more pervasive th

According to the text, it is upsetting that ______.

A.the flu-catching is more pervasive the world over

B.the cause of initial outbreak has not been identified

C.global co-ordination is yet to well develop

D.people still have no answers concerning surveillance and containment

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第5题
" Sesame Street" (芝麻街) has been called "the longest street in the world". That is becau

" Sesame Street" (芝麻街) has been called "the longest street in the world". That is because the television program by that name can now be seen in so many parts of the world. That program became one of America's exports soon after it went on the air in the New York in 1969.

In the United States more than six million children watch the program regularly. The viewers include more than half of the nation's pre-school children. Although some educators object to certain elements in the program, parents praise it highly. Many teachers also consider it a great help, though some teachers find that problems arise when first graders who have learned from "Sesame Street" are in the same class with children who have not watched the program.

The program uses songs, stories, jokes and pictures to give children a basic understanding of numbers, letters and human relationships. Tests have shown that children have benefited from watching "Sesame Street". Those who watch five times a week learn more than the occasional viewers. In the United States the program is shown at different times during the week in order to increase the number of children who can watch it regularly.

Why has "Sesame Street" been so much more successful than other children's shows? Many reasons have been suggested. People mention the educational theories of its creators, the support by the government and private businesses, and the skillful use of a variety of TV tricks. Perhaps an equally important reason is that mothers watch "Sesame Street" along with their children. This is partly because famous adult stars often appear on "Sesame Street". But the best reason for the success of the program may be that it makes every child watching it feel able to learn. The child finds himself learning, and he wants to learn more.

Why has "Sesame Street" been called "the longest street in the world"?

A.The program has been shown ever since 1969.

B.The program became one of America's major exports soon after it appeared on TV.

C.The program is now being watched in most parts of the world.

D.The program is made in the longest street in New York.

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第6题
Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned.
The time necessary 【63】 this is 5 to 10 minutes. After a break of this period of time the memory will have 【64 】what has just been learnt, and more will be remembered. During this break. 【65】 is important to exercise the right side of the brain, 【66】 the left side is used during a learning period. 【67】 you should relax in some way. 【68】 music, breathing in fresh air, and 【69】 at a picture, are all ways of using 【70】 side of the brain.

(61)

A.that

B.what

C.which

D.it

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第7题
Passage One Valencia is in the east part of Spain. It has a port on the sea, two miles a

Passage One

Valencia is in the east part of Spain. It has a port on the sea, two miles away from the coast. It is the capital of a province that is also named Valencia.

The city is the market centre for what is produced by the land around the city. Most of the city's money is made from farming. It is also a busy business city with ships, railways, clothes and machine factories.

Valencia has an old part with white buildings, coloured roofs, and narrow streets. The modern part has long, wide streets and new buildings. Valencia is well known for its parks and gardens. It has many old churches and museums. The University in the centre of the city was built in the 13(上标)th century.

The city of valencia has been known since the 2(上标)nd century. In the 8(上标)th century it was the capital of Spain. There is also an important city in Venzuela(委内瑞拉)named Valencia.

36. The main income of the city of Valencia is from its______.

A. markets

B. business

C. factories

D. farming

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第8题
That Louise Nevelson is believed by many critics to be the greatest twentieth-century scul
ptor is all the more remarkable because the greatest resistance to women artists has been, until recently, in the field of sculpture. Since Neolithic times, sculpture has been considered the prerogative of men, partly, perhaps, for purely physical reasons: it was erroneously assumed that women were not suited for the hard manual labor required in sculpting stone, carving wood, or working in metal. It has been only during the twentieth century that women sculptors have been recognized as major artists, and it has been in the United States, especially since the decades of the fifties and sixties, that women sculptors have shown the greatest originality and creative power. Their rise to prominence parallels the development of sculpture itself in the United States: while there had been a few talented sculptors in the United States before the 1940’s, it was only after 1945 — when New York was rapidly becoming the art capital of the world — that major sculpture was produced in the United States. Some of the best was the work of women.

By far the most outstanding of these women is Louise Nevelson, who in the eyes of many critics is the most original female artist alive today. One famous and influential critic, Hilton Kramer, said of her work, “For myself, I think Ms. Nevelson succeeds where the painters often fail.”

Her works have been compared to the Cubist constructions of Picasso, the Surrealistic objects of Miro, and the Merzbau of Schwitters. Nevelson would be the first to admit that she has been influenced by all of these, as well as by African sculpture, and by Native American and pre-Columbian art, but she has absorbed all these influences and still created a distinctive art that expresses the urban landscape and the aesthetic sensibility of the twentieth century. Nevelson says, “I have always wanted to show the world that art is everywhere, except that it has to pass through a creative mind.”

Using mostly discarded wooden objects like packing crates, broken pieces of furniture, and abandoned architectural ornaments, all of which she has hoarded for years, she assembles architectural constructions of great beauty and power. Creating very freely with no sketches, she glues and nails objects together, paints them black, or more rarely white or gold, and places them in boxes. These assemblages, walls, even entire environments create a mysterious, almost awe-inspiring atmosphere. Although she has denied any symbolic or religious intent in her works, their three-dimensional grandeur and even their titles, such as Sky Cathedral and Night Cathedral, suggest such connotations. In some ways, her most ambitious works are closer to architecture than to traditional sculpture, but then neither Louise Nevelson nor her art fits into any neat category.

The writer implies in the first paragraph that

A.Louise Nevelson was known before 1940s.

B.until the 1950s and the 1960s, there was no major sculpture made by women artists.

C.Ameirican sculpture developed with the appearance of women sculptors.

D.New York became the art capital because of the contributions made by women sculptors.

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第9题
A new kind of radar has been developed for spaceship travelers. A working laboratory model
of a new system of radar that makes use of a beam of light is said to be ten thousand times more accurate than the best comparable system of radar that used microwaves.

The model has shown that this radar system, known as laser-doppler radar, can measure with absolute precision speeds varying from spaceship orbital injection (进入) velocities (速度) of five miles per second down to virtual stops--speeds of less than one ten thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous (对接) between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could rip open a ship's skin, or a nudge could knock the station out of its orbit.

The light-beam radar, which operates at a frequency of trillions (百万兆) of cycles per second, could easily detect and measure the movement of a vehicle edging up to a satellite space station. A control system using so precise a signal as this would allow a huge vehicle to dock at a space station as lightly as a feather.

Laser-doppler radar ______. ()

A.measures the movements of a spaceship by means of light beam

B.makes use of microwaves

C.makes use of sound waves

D.Both A and B

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第10题
Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised th

Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised the system of Latinised scientific names for living things that biologists use to this day. When he came to (1)_____ people into his system, he put them into a group called Homo—and Linne's hairless fellow humans are still known biologically as Homo sapiens. (2)_____ the group originally had a second member, Homo troglodytes. It lived in Africa, and the pictures show it to be covered (3)_____ hair.

Modern (4)_____ are not as generous as Linne in welcoming other species into Man's lofty (5)_____, and the chimpanzee is now referred to (6)_____ Pan troglodytes. But Pan or Homo, there is no (7)_____ that chimps are humans' nearest living relatives, and that if the secrets of what makes humanity special are ever to be (8)_____, understanding why chimps are not people, nor people chimps, is a crucial part of the process. That, in turn, means looking at the DNA of the two species, (9)_____ it is here that the (10)_____ must originate.

One half of the puzzle has been (11)_____ for several years: the human genome was published in 2001. The second has now been added, with the announcement in this week's Nature (12)_____ the chimpanzee genome has been sequenced as well. For those expecting (13)_____ answers to age-old questions (14)_____, the publication of the chimp genome may be something of an (15)_____. There are no immediately obvious genes-present in one, but not the other-that account for such characteristic human (16)_____ as intelligence or even hairlessness. And (17)_____ there is a gene connected with language, known as FOXP2, it had already been discovered. But although the preliminary comparison of the two genomes (18)_____ by the members of the Chimpanzee Sequencing and Analysis Consortium, the multinational team that generated the sequence, did not (19)_____, any obvious nuggets of genetic gold, it does at least show where to look for (20)_____.

A.slot

B.pledge

C.plot

D.scrutinize

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