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[主观题]

Scientists around the world are racing to learn how to rapidly diagnose, treat and stop th

e spread of a new, deadly disease. SARS — Severe Acute Respiratory Syndrome — was【1】for the first time in February 2003 in Hanoi,【2】since then has infected more than 1,600 people in 15 countries, killing 63. At this【3】, there are more questions than answers surrounding the disease.

Symptoms start【4】a fever over 100.4 degrees F, chills, headache or body【5】. Within a week, the patient has a dry cough, which might【6】to shortness of breath. In 10% to 200% of cases, patients require【7】ventilation to breathe. About 3.5% die from the disease. Symptoms【8】begin in two to seven days, but some reports suggest it【9】take as long as 10 days. Scientists are close to【10】a lab test to diagnose SARS. In the meantime, it is diagnosed by its symptoms. There is no evidence【11】antibiotics or anti-viral medicines help,【12】doctors can offer only supportive care. Patients with SARS are kept in isolation to reduce the risk of【13】. Scientists aren’t sure yet, but some researchers think it’s a【14】discovered coronavirus, the family of viruses that cause some common colds.

Most cases appear to have been passed【15】droplets expelled when infected patients cough or sneeze. Family members of infected people and medical workers who care for them have been most likely to【16】the illness. But recent developments in Hong Kong suggest that the【17】might spread through air, or that the virus might【18】for two to three hours on doorknobs or other【19】Health experts say it is【20】, though, that sharing an elevator briefly with an infected person would be enough to pass the virus.

(1)

A．detected

B．caught

C．disclosed

D．revealed

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发布时间：2020-09-17

更多“Scientists around the world are racing to learn how to rapidly diagnose, treat and stop th”相关的问题

第1题

This passage is mainly about______.A．the cluster of leukaemia cases around the Sellafield

This passage is mainly about______.

A．the cluster of leukaemia cases around the Sellafield nuclear reprocessing part

B．the kind of infection that causes childhood leukaemia

C．the causes of childhood leukaemia

D．a new finding by British scientists

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第2题

In 1968, research scientists began cooking the Arpanet for the purpose of______.A．finding

In 1968, research scientists began cooking the Arpanet for the purpose of______.

A．finding a better way of public communication

B．creating e-mail

C．sharing resources among disparate computing centers

D．sending mail around

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第3题

Why are Amold Schwarzenegger and Garth Brooks mentioned in Paragraph 5？[A] To prove th

Why are Amold Schwarzenegger and Garth Brooks mentioned in Paragraph 5？

[A] To prove their popularity around the world.

[B] To reveal the public’s fear of immigrants.

[C] To give examples of successful immigrants.

[D] To show the powerful influence of American culture.

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第4题

On a clear night you can see many stars in the sky. These stars are millions of miles away

. Are there living things on any of the stars？ People have always thought about this question. They could not find the answer before now. Today scientists know more about space than ever before. Some machines can help them look for the answer.

How will scientists do this？ People can' t go to the stars. The stars are far away. A person would take hundreds of years to the next star in a spaceship. So scientists are sending out radio signals. These signals travel in space at the speed of light. At that speed, radio signals will take 25 years to reach the next star. The signals ask "Is there anyone out here？". Living things in space must have machines to hear the signals. We will not get an answer to our signals for more than 50 years. However, scientists are already listening. Someone from space may be trying to send signals to us, too.

Scientists also have sent large telescopes into space. A telescope can make things look larger. The telescopes are going around the earth. They are looking for life on other worlds. In the next few years we may get an answer to the question, "Is there life in space.

People always thought about the question, ______.

A．How can scientists use machines to look for a star？

B．How far away are the stars？

C．How many years a person would take to go to the next star in a spaceship？

D．Is there life in space？

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第5题

Each scientific specialty has its own set of journals. Physicists have Physical Review Let

ters, cell biologists have Cell, neuroscientists have Neuron, and so forth. Science and Nature, (1)_____, are the only two major journals that (2)_____ the complete range of scientific (3)_____. As a result, journalists look (4)_____ them each week for the (5)_____ of new science papers. And scientists look to the journals (6)_____ to reach journalists. Why do they care？ Competition for (7)_____ has gotten so fierce that scientists have sought popular (8)_____ to gain an advantage over their (9)_____. Publication in specialized journals will win the honor of academics and satisfy the publish-or-perish (10)_____, but Science and Nature come with the added bonus of potentially getting your paper written up in The New York Times and other publications.

Scientists are also trying to (11)_____ other scientists through Science and Nature, not just the public. The line between popular and professional notoriety is not (12)_____. Scientists tend to pay more attention to the Big Two than to other journals. (13)_____ more scientists know about a particular pa per, they are more apt to cite it in their own papers. Being often-cited will increase a scientist's "Impact Factor", a measure of how often papers are cited by (14)_____. Funding agencies use the Impact Factor as a (15)_____ measure of the influence of scientists they are considering supporting. (16)_____ Science and Nature papers have more visibility, the number of' submissions is growing, say the editors. Nature now gets 10,000 (17)_____ a year, and that figure is rising, says editor-in-chief Philip Campbell via email. In his opinion, this partly reflects the increase (18)_____ scientific activity around the word. It also (19)_____ reflects the increasing and sometimes (20)_____ emphasis amongst funding agencies and governments on publication measures, such as the typical rates of citation of journals.

A．even

B．though

C．although

D．as if

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第6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7题

Futurists love computers. After all, 40 years ago electronic digital computers didn't exis

t; today microchips (微型集成电路片) as tiny as a baby's fingernail are making all sorts of tasks faster and easier. Surely the future hold still more miracles.

Some of the computer experiments now going inspire imagination of the future. For example, scientists are working in devices that can electronically perform. some sight and hearing functions, which could make easier for the blind and deaf. They are also working on artificial arms and legs that respond to the electric impulses (脉冲) produced by the human brain. Scientists hope that someday a person who has lost an arm could still have near-normal brain control over an artificial arm.

Video games, computerized effects in movies, and real-life training machines now being used by the U. S. Army are causing some people to predict new educational uses for computers. Computers could someday be used to imitate travel to other planets, to explore the ocean floor or to look inside an atom.

Experiment with electronic banking and shopping inspire predictions that these activities will soon be done from home computer terminals (终端) . Cars, too, might be equipped with computers to help drivers find their way around or to communicate with home and office computers.

Many people, including handicapped (残废的) workers with limited ability to move around, already are working at home using computer terminals. Each terminal is connected to a system at a company's main office. Some futurists say the day may come when few people will have to leave home to go to work—they'll just turn on a terminal.

Which of the following would be the most appropriate title for the passage？

A．Futurists and Computers

B．A Look at Future Uses of Computers

C．Computer Experiments

D．Scientists and Computers

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第8题

Passage Three A group of scientists rowing toward the center of a lake saw something sho

Passage Three

A group of scientists rowing toward the center of a lake saw something shocking. They turned back as fast as they could. What had they seen.？ The lake was boiling!

The group was investigating a crater lake in the mountains of St. Vincent. A crater lake is the mouth of a volcano that has been dormant for some time and has filled with water.

This particular crater was the tip of a volcano called Soufriere, which erupted last in 1902. Since that time, it had not shown any signs of action. But in the fall of 1971, mountain climbers who had hiked near the lake returned to the lowlands with strange stories. They said the water had turned yellow and was giving off a smell like burnt eggs. A seething fog was rising from the lake's surface.

Local scientists rushed to Soufriere to see if this might be the beginning of a new volcanic explosion. They found a huge black mass in the middle of the water. It was a great blob 1,000 feet long and 300 feet wide. Lava had pushed up through the bottom of the lake and formed a new island.

The investigators wanted to make sure that the volcano was safe, and that the lava would not over- flow into the surrounding countryside. But they could never reach the island to study it, because the lava was so hot that the water around it bubbled and boiled.

44. This passage is about ______.

A. mountain climbing

B. a boiling lake

C. a new volcanic island

D. a mysterious blob

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第9题

The sense of sound is one of our most important means of knowing what is going on around u

s. Sound has a waster product, too, in the form. of noise. Noise has been called unwanted sound. Noise is growing and it may get much worse before it gets any better.

Scientists, for several years, have been studying how noise affects people and animals. They are surprised by what they have learned. Peace and quiet are becoming harder to find. Noise pollution is a threat that should be looked at carefully.

There is a saying that it is so noisy that you can't hear yourself think. Doctors who study noise believe that we must sometimes hear ourselves think. If we don't, we may have headaches, other aches and pains, or even worse mental problems.

Noise adds more tension (紧张) to a society that already faces enough stress.

But noise is not a new problem. In ancient Rome, people complained so much about noise that government stopped chariots (四轮马车) from moving through the streets at night!

Ways of making less noise are now being tested. There are even laws controlling noise. We cannot return to the "good old days" of peace and quiet. But we can reduce noise--if we shout loudly enough about it.

Why are scientists surprised by the findings in their noise study？

A．Because the world is becoming more and more noisy.

B．Because they have learned that noise is also a kind of pollution.

C．Because noise is an unwanted waste for human beings.

D．Because people knew little about noise before.

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