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----- Who is killing the whales ?
------ The whales _______ by the Japanese fishermen.
A. are killed B. are killing C. are being killed D. are to be killed
查看习题详情和答案>>阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项。
A
Imagine landing in a foreign country where you cannot speak the language, understand the culture and don’t know anybody. Wouldn’t it be nice to have a friend who could help you out?
John Smith, an English explorer who landed in America in 1607, found the best friend ever. She was a Native American named Pocahontas (1595-1617). And she did more than teach Smith the language: she saved his life, twice.
Smith was captured by members of Pocahontas’s tribe (部落) and was going to be killed. But for some reason, the Chief’s daughter, Pocahontas, felt sorry for Smith (who was probably the first white man she had ever seen) and threw her body over his to protect him. Smith returned safely to the small village he was living in.
During the winter the English settlers did not know how to get food from nature. Pocahontas often brought food for Smith and his friends.
A year later Pocahontas’s father tried to kill Smith again because the Native Americans were very scared the English would try to take over their land. Pocahontas warned him and he was able to escape.
Later she became a Christian and eventually married an Englishman named John Rolfe.
She spent the last year of her life in London.
Pocahontas has become an American legend (传奇). Her life story has been re-created in many books and films, including Disney’s 1995 film, Pocahontas.
One of the reasons she is so popular is that many Europeans look at Pocahontas as an excellent example of how a minority can adjust into the majority. Pocahontas is also respected because of her selfless love. She proved that people can be kind and loving even to people of a different race or culture. John Smith was very different from Pocahontas but she could see he was a good man and that was all that mattered. No race or country owns goodness, love and loyalty.
1.What difficulties might early European settlers meet in America EXCEPT ______?
A. the fierce conflict with Native Americans
B. bad-tempered natives who enjoyed killing
C. unfamiliarity with a foreign land
D. lack of food in winter
2.Pocahontas saved John Smith twice because ______.
A. he was the first white man she had ever seen in her life
B. she wanted to become a Christian and marry an Englishman
C. she believed in general kindness even to people of a different race
D. she was on the settlers’ side and against her cruel father
3.Which is NOT an element to make Pocahontas a legend?
A. Her tribal background and her marriage to a white settler.
B. Her selfless help to people regarded as enemy of her tribe.
C. Her complicated life story different from common people’s.
D. The recreation of her life story in the 1995 Disney film.
4.According to the text, Europeans think Pocahontas _____.
A. was brave to break away from her own tribe
B. set a good example for other natives to accept the white settlers
C. was a selfless Christian who can love her enemy
D. was open to a more advanced culture
5.What can we infer from the passage?
A. The battles between early settlers and Native Americans resulted from their fighting for land.
B. The Europeans think the early settlers should have learned to adjust to the local cultures.
C. The creation of America is based on the settlers’ victory over the Native Americans.
D. People from different cultures can never really get along well with each other.
B
Chinese students aren’t the only ones who have a sleep loss problem. In Australia, teenagers are also missing out on, on average, one hour’s sleep every night during the school week.
Organized activities and homework push bedtimes later, the first large-scale Australian study of children’s sleeping habits has revealed (显示). Their sleep deprivation (剥夺) is enough to cause “serious drop-offs in school performance, attention and memory”, and governments should consider later or flexible school start times, said the study’s leader, Tim Olds.
His survey, of more than 4,000 children aged 9 to 18, found those who slept least did not watch more television but spent their time socializing (相处) with family or friends or listening to music.
“Almost all children get up at 7 or 7:15 — they have to get to school on time,” said Olds. He favors a later start over an earlier finish because he believes organized sports and activities would still consume the latter end of the day.
Olds’research also establishes lack of sleep as a cause of weight gain in children, and a possible source of future problems with depression, anxiety and increased susceptibility (易感性) to illness.
It was already known that overweight children sleep less, but Professor Olds found sleep duration (时长) was strongly linked to weight across the full range of body sizes. The thinnest children sleep 20 minutes more than the obese. This showed being overweight had no specific effect on sleep patterns, and it was more likely that shorter sleep times stimulate (刺激) appetite and make kids hungry.
The US National Sleep Foundation says teenagers aged 13 to 18 need eight to nine hours’ sleep a night. Younger school-aged kids need 9 to 11 hours.
On that basis, Professor Olds said, half of Australian children are under-sleeping on weekdays and a quarter on weekends.
6. The Australian students surveyed don’t sleep enough because they spend more time on the following EXCEPT _____.
A. organized activities and homework
B. communication with friends and family
C. watching television programs
D. enjoying music
7. What effects does lack of sleep directly have on the students according to the survey?
A. They become overweight but begin to eat less than before.
B. They feel more depressed and anxious about their school work.
C. They are more likely to be affected with illness in the future.
D. They pay less attention in class and their memory declines.
8. Which of the following suggestions did Mr. Olds raise?
A. The students should go to bed earlier to have longer sleeping time.
B. The students should participate less in organized activities.
C. The school should put off the start time in the morning.
D. The school should finish earlier in the afternoon.
9. What does "obese" in the sixth paragraph mean?
A. average B. fat C. sleepless D. overeating
10. Which of the following statements is TRUE?
A. Australian students usually take part in activities in the afternoon.
B. More students are short of sleep on weekends than on weekdays.
C. Being overweight has an effect on the length of the sleeping time.
D. The survey suggests that teenagers need 8-9 hours’ sleep a night.
C
By day he is just a normal cat but when the lights go out, he glows (发光) in the dark.
Scientists have genetically modified (更改) a cat as part of an experiment that could lead to treatments for diseases.
Named Mr. Green Genes, he looks like a six-month-old cat but, under ultraviolet (紫外线的) light, his eyes, gums (牙龈) and tongue glow green. That is the result of a genetic experiment at the Audubon Center for Research of Endangered Species in New Orleans, US.
Mr. Green Genes is the first fluorescent (荧光的) cat in the US and probably the world, said Betsy Dresser, the center's director.
The researchers made him so they could learn whether a gene could be introduced harmlessly into a cat's genetic sequence (次序).
If so, it would be the first step in a process that could lead to the development of ways to treat diseases via gene therapy (治疗).
The gene, which was added to Mr. Green Genes' DNA, has no effect on his health, Ms Dresser said.
Cats are ideal for this project because their genetic makeup is similar to that of humans, said Dr Martha Gomez, a scientist at the center.
To show that the gene went where it was supposed to go, the researchers settled on one that would glow.
The gene "is just a marker"，said Leslie Lyons, an assistant professor at the University of California, Davis. Lyons is familiar with the center's work.
"The glowing part is the fun part," she said.
Glowing creatures made international news earlier this month when the Nobel Prize in Chemistry was awarded to three scientists who had discovered the gene through their work with jellyfish (水母).
11.Which of the following might be the best title for the passage?
A. A Glowing Cat B. Mr. Green Genes
C. One Cat’s Life D. An experiment on cats
12. What can we conclude from the passage?
A. Fortunately, scientists have found ways to treat diseases via gene therapy.
B. Scientists think cats’ genetic makeup is the same as that of human beings.
C. Three scientists who had discovered the gene were given Nobel Prize in Physics.
D. Scientists have managed to introduce a gene into a cat’s genetic sequence.
13. What does “settled on” most probably mean in Paragraph 9?
A. chose B. killed C. took D. raised
14. From the passage we can see that ____.
A. Mr. Green Genes was made by researchers to treat diseases
B. the cat named Mr. Green Genes can glow when it is dark
C. Mr. Green Genes is the first fluorescent cat in the world
D. Mr. Green Genes is a cat of seven months old up to now
15. Which of the following is WRONG according to the text?
A. The gene added to Mr. Green Genes’ DNA doesn’t affect its health at all.
B. The scientists came up with the idea of the glowing genes totally for fun.
C. Earlier this month glowing creatures became news all through the world.
D. Scientists had discovered the gene from the jellyfish they worked with.
查看习题详情和答案>>Everywhere man is altering the balance of nature．He is facilitating the spread of plants and animals into new regions, sometimes deliberately, sometimes unconsciously．He is covering huge areas with new kinds of plants, or with houses, factories, slag-heaps and other products of his civilization．He exterminates some species on a large scale, but favors the multiplication of others．In brief, he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million．
Many of these changes which he has brought about have had unforeseen consequences．Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade, or that the provision of pot cacti for lonely settlers’ wives would have led to Eastern Australian being overrun with forests of Prickly Pear? Who would have prophesied that the cutting down of forests on the Adriatic coasts, or in parts of Central Africa, could have reduced the land to a semi desert, with the very soil washed away from the bare rock? Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa, measles into Oceania, very possibly malaria into ancient Greece?
These are spectacular examples; but examples on a smaller scale are everywhere to be found．We make a nature sanctuary for rare birds, prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested．We see, owing to some little change brought about by civilization, the starling spread over the English country-side in hordes．We improve the yielding capacities of our cattle; and find that now they exhaust the pastures which sufficed for less exigent stock．
1.The following examples except _______________ reflect man altering the balance of nature．
A．man is covering huge areas with new kinds of plants
B．man is facilitating the spread of animals into new regions．
C．man is killing some species on a large scale
D．man is getting to know the importance of keeping the balance of nature．
2.What had a piece of Canadian waterweed cause?
A．Eastern Australian was overrun with forests．
B．Half the waterways of Britain blocked for a decade．
C．In parts of central Africa, the land reduced to a semi desert．
D．Disease-sleeping has been caused．
3.What have spread diseases?
A．Disease-sleeping sickness． B．Measles．
C．Improved communications． D．Malaria．
4.We make a nature sanctuary for rare birds but _______________.
A．some common and hardy kind of bird multiplies
B．rare kinds multiply
C．all bird multiply
D．no bird multiply
5.The main idea of the passage is ______________．
A．that man is deliberately destroying the balance of nature
B．that man has foreseen the consequences of altering the balance old nature
C．that improved communications have changed history
D．that man is altering the balance of nature
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Everywhere man is altering the balance of nature．He is facilitating the spread of plants and animals into new regions, sometimes deliberately, sometimes unconsciously．He is covering huge areas with new kinds of plants, or with houses, factories, slag-heaps and other products of his civilization．He exterminates some species on a large scale, but favours the multiplication of others．In brief, he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million．
Many of these changes which he has brought about have had unforeseen consequences．Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade, or that the provision of pot cacti for lonely settlers’ wives would have led to Eastern Australian being overrun with forests of Prickly Pear? Who would have prophesied that the cutting down of forests on the Adriatic coasts, or in parts of Central Africa, could have reduced the land to a semidesert, with the very soil washed away from the bare rock? Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa, measles into Oceania, very possibly malaria into ancient Greece?
These are spectacular examples; but examples on a smaller scale are everywhere to be found．We make a nature sanctuary for rare birds, prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested．We see, owing to some little change brought about by civilization, the starling spread over the English country-side in hordes．We improve the yielding capacities of our cattle; and find that now they exhaust the pastures which sufficed for less exigent stock．
The following examples except ________ reflect man altering the balance of nature．
A．man is covering huge areas with new kinds of plants
B．man is facilitating the spread of animals into new regions．
C．man is killing some species on a large scale
D．man is getting to know the importance of keeping the balance of nature．
What had a piece of Canadian waterweed cause?
A．Eastern Australian was overrun with forests．
B．Half the waterways of Britain blocked for a decade．
C．In parts of central Africa, the land reduced to a semidesert．
D．Disease-sleeping has been caused．
What have spread diseases?
A．Disease-sleeping sickness． B．Measles．
C．Improved communications． D．Malaria．
We make a nature sanctuary for rare birds but __________
A．some common and hardy kind of bird multiplies
B．rare kinds multiply
C．all bird multiply
D．no bird multiply
The main idea of the passage is _________．
A．that man is deliberately destroying the balance of nature
B．that man has foreseen the consequences of altering the balance old nature
C．that improved communications have changed history
D．that man is altering the balance of nature
查看习题详情和答案>>Industrial pollution is not only a problem for the countries of Europe and North America but also an extremely serious problem in some developing countries. For these countries, economic growth is a very important aim. They want to introduce industries, and so they put few controls on the industries which cause pollution.
Cubatao, an industrial town of 85 000 people in Brazil, is an example of the connection between industrial development and pollution. In 1954, Cubatao had no industry. Today it has more than twenty large factories, which produce many pollutants(污染物). The people of the town are suffering from the poisonous matter in their environment and the bad effects can be clearly seen. Birth shortcomings are extremely common. Among children and adults, lung problems are sometimes twelve times more common in Cubatao than in other places.
It is true that Brazil, like many other countries, has laws against pollution, but these laws are not enforced strictly enough. It is cheaper for companies to take no notice of the laws and pay the fines(罚款) than to buy the expensive equipment that will reduce the pollution. It is clear, therefore, that economic growth is more important to the government than to the health of the workers. However, the responsibility(责任) does not completely lie with the Brazilian government. The example of Cubatao shows that international companies are not acting in a responsible way either. A number of the factories in the town are owned by large companies from France, Italy, and the U. S. They are doing things in Brazil that they would not be able to do at home. If they caused the same amount of pollution at home, they would be severely(严厉地) punished or even put out of business.
Why don’t developing countries have strict pollution controls?
A. The new industries they want to introduce do not cause much pollution.
B. Pollution is not a serious problem for developing countries.
C. They don’t realize the balance of nature will be destroyed by some pollutants.
D. If they put stricter controls on industry, fewer companies would build new plants in developing countries.
What is the author’s purpose in taking Cubatao as an example?
A. To show that industry can develop very fast in developing countries.
B. To show that the pollution problem in Brazil is extremely serious.
C. To show that industrial growth can cause pollution problems for developing countries.
D. To show that pollution is killing many people and destroying the whole economy of Brazil.
How is the health of the population of Cubatao?
A. There are more heart diseases among people who live near chemical factories.
B. More people suffer from lung diseases because of poisonous matter.
C. Their health is affected by pollutants the same way as that of other Brazilians.
D. Babies there are found not as bright as those who live in other places.
Why do some foreign companies like to set up their plants in Brazil?
A. The investment(投资) environment in Brazil is suitable for them.
B. They will not be severely punished if they cause pollution in Brazil.
C. They can make much money because they do not have to pay Brazilian workers much.
D. They can act in an irresponsible(不负责任的) way in Brazil because there are no pollution laws there.
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