题目
题型：不详难度：来源：
The most widespread mistake of all is that colds are caused by cold. They are not. They are caused by viruses(病毒) passing on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in isolated Arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.
During the First World War soldiers who spent long periods in the trenches(战壕), cold and wet, showed no increased tendency to catch colds.
In the Second World War prisoners at the notorious Auschwitz concentration camp(奥斯维辛集中营), naked and starving, were astonished to find that they seldom had colds.
At the Common Cold Research Unit in England, volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty room. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.
If, then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter? Despite the most pains—taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.
No one has yet found a cure for the cold. There are drugs and pain suppressors(止痛片) such as aspirin, but all they do is to relieve the symptoms(症状).
小题1:The writer offered _______ examples to support his argument.
| A．4 | B．5 | C．6 | D．3 |
| A．The Eskimos do not suffer from colds all the time. |
| B．Colds are not caused by cold. |
| C．People suffer from colds just because they like to stay indoors. |
| D．A person may catch a cold by touching someone who already had one. |
| A．they are working in the isolated Arctic regions |
| B．they are writing reports in terribly cold weather |
| C．they are free from work in the isolated Arctic regions |
| D．they are coming into touch again with the outside world |
| A．the experiments on the common cold |
| B．the fallacy about the common cold |
| C．the reason and the way people catch colds |
| D．the continued spread of common colds |
答案
小题1:B
小题2:C
小题3:D
小题4:B
解析
本文为议论文。阐述了“感冒不是由寒冷引起的”观点。
小题1:细节题。作者举了5个例子来说明自己的观点：Eskimos; explorers in isolated Arctic regions; soldiers during the First World War; prisoners at the Auschwitz concentration camp; volunteers in Experiments.
小题2:细节题。选项A、B、D均与原文相符(见第二段)，而选项C显然与文中的You catch a cold by coming into contact, directly or indirectly, with someone who already has one. 不相符，故选C。
小题3:细节题从 …explorers have reported being free from colds until coming into contact again with infected people from the outside 中可以知道，这些探险者是因为与外界接触而感冒的。
小题4:主旨题。第二段的第一、二句The most widespread mistake of all is that colds are caused by cold. They are not.是本文的主题句。全文主要阐述了“感冒不是由寒冷引起的”这一观点。
核心考点
试题【The common cold is the world"s most widespread illness, which is plagues(疫病) tha】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Laurence Vico and his fellow workers at St Etienne University called for more research into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station showed bone loss continued throughout space flights.
“Bone loss was especially striking in four astronauts, ” the scientists reported in the Lancet Medical Journal.
They measured the bone mineral density (BMD) of bones in the forearm(前臂) and lower leg of the astronauts who had spent one to six months in space.
The BMD loss was significant in the tibia(胫骨) of the lower leg, a weight-bearing bone, but barely changed in the radius(桡骨) of the forearm. “Our results indicate the need to investigate not only different bones, but also different areas of the same bone since not all sites of the skeleton (骨架) are similarly affected by space conditions, ” they added.
Without gravity the body isn’t bearing any weight so there is no need for calcium (钙) which makes bones strong, and it becomes empty into the bloodstream.
The research team suggested in future scientists should try to determine if the loss of bone density was only on weight-bearing bones on longer flights, also the possible recovery after returning to Earth.
小题1:French scientists did their research on Russian astronauts, because _______.
| A．they only cared for the Russian astronauts |
| B．they were not interested in their own astronauts |
| C．the Russian government invited them to do their research |
| D．the Russian astronauts worked in space for a long time |
| A．the BMD loss may cause serious illness to astronauts |
| B．the BMD loss may cause some change in astronauts’ bodies |
| C．astronauts shouldn’t care about the BMD loss |
| D．astronauts should take some calcium before space travel |
| A．The food they eat in space. | B．The drinks they take in space. |
| C．The temperature in space. | D．The gravity in space. |
| A．unusual | B．simple | C．weak | D．slow |
Online doctors offering advice based on normal symptoms(症状) are the most obvious example. Increasingly, however, remote diagnosis(远程诊断) will be based on real physiological data(生理数据) from the actual patient. A group from the University of Kentucky has shown that by using personal data assistance plus a mobile phone, it is perfectly practical to send a patient’s important signs over the telephone. With this kind of equipment, the cry asking whether there was a doctor in the house could well be a thing of the past.
Other medical technology groups are working on applying telemedicine to rural(countryside) care. And at least one team wants to use telemedicine as a tool for disaster need—especially after earthquakes. On the whole, the trend is towards providing global access to medical data and experts’ opinions.
But there is one problem. Bandwidth(宽带) is the limiting factor for sending complex(复杂的) medical pictures around the world — CT photos being one of the biggest bandwidth users. Communication satellites may be able to deal with the short-term needs during disasters such as earthquakes or wars. But medicine is looking towards both the second-generation Internet and third-generation mobile phones for the future of remote medical service.
Doctors have met to discuss computer-based tools for medical diagnosis, training and telemedicine. With the falling price of broadband communications, the new technologies should start a new time when telemedicine and the sharing of medical information, experts’ opinions and diagnosis are common.
小题1: The writer chiefly talks about _______.
| A．the use of telemedicine | B．the on-lined doctors |
| C．medical care and treatment | D．communication improvement |
| A．personal data assistance |
| B．some words of a patient |
| C．real physiological information |
| D．medical pictures from the Internet |
| A．Patients don’t need doctors in hospitals any more. |
| B．It is impossible to send a patient’s signs over the telephone. |
| C．Many teams use telemedicine dealing with disasters now. |
| D．Broadband communications will become cheaper in the future. |
| A．bandwidth isn’t big enough to send complex medical pictures |
| B．the second-generation of Internet has not become popular yet |
| C．communication satellites can only deal with short-term needs |
| D．there is not enough equipment for spreading the medical care |
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increase the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions has been raised about sunscreen and whether it may has opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer--- people with fair skin and freckles (雀斑), for example--- are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
小题1:72. The underlined word “flaws” in the 2nd paragraph most probably means ______.
| A．evidence | B．facts | C．faults | D．failures |
| A．seldom use sunscreen | B．are more in danger of skin cancer |
| C．can be free from the harm of the sun | D．often expose themselves to the sun |
| A．sunscreen users get skin cancer more often |
| B．the volunteers have proved the effect of sunscreen |
| C．the new study was based on the experiences of volunteers |
| D．the number of skin cancer patients is increasing in America |
| A．Sunscreen to Prevent Skin Cancer | B．Sunscreen to Increase Skin Cancer |
| C．Skin Cancer Caused by Sunscreen | D．Skin Cancer Caused by Freckles |
Seeing a volcano erupt (喷发) is a wonderful experience, and you can really feel the beat by climbing to the summit(山顶) of Pacaya for a close-up view. There are guided tours every day up this highly active volcano from Antigua. Giving travelers a chance to see Mother Nature at her most powerful.
Pacaya is an easy drive from Antigua, a beautiful city with many colorful houses along its old streets that are turned into art-works during its Holy Week festival. No matter when you come to Antigua, you won’t miss the Pacaya-tour companies.
But climbing Pacaya is no easy job: it is 2560 metres high, and reaching the summit takes two to three hours of seemingly one-step-forward and two-step-back movements. As you climb, you hear the dull sounds of eruptions high above. Steaming. Hot remains from recent eruptions begin to line the path as you near the active summit; the McKenney Cone(火山锥). Just as though you were going to walk over to the edge of the cone, the road turns to the left and up to the relative safety of the old, inactive summit.
Many tours are timed so that you arrive at the cone of the volcano is plenty of time for sunset and the full contrast between the erupting red lava(熔岩) and the darkening sky. On a good day the view from the summit is extremely exciting. The active mouth boils, sending red lava over its sides, and once in a while shoots hot streams up to 100 metres into the air. There is a strong bad smell in the air even if you take care to be upwind of the cone. As evening turns deeper into the night. the burning lava quietly falls down tae side of the volcano. For you, too, it is time to get down .
小题1: What is the main purpose of this passage?
| A．To attract tourists to Pacaya. | B．To describe the beauty of Pacaya. |
| C．To introduce guided tours to Pacaya. | D．To explain the power of nature at Pacaya. |
| A．where people can enjoy cultural festivals | B．where the daring Pacaya tour starts |
| C．that gives a close-up view of Paraya | D．that is famous for its tour companies |
| A．walk directly to the active summit | B．hear the continuous loud noise from above |
| C．make greater efforts than to other summits | |
| D．see a path lined with remains of earlier eruptions |
| A．get down the mountain in time when night falls |
| B．avoid the smell from the upwind direction of the cone |
| C．enjoy the fantastic eruption against the darkening sky |
| D．appreciate the scenery of the 2560-metre-high mountain |
All foods including water — cabbage and other leaf vegetables contains as much as 93% water, potatoes and other root vegetables 80%, lean (瘦的) meat 75% and fish, anything from 80% to 60%, depending on how fatty it is. If this water is removed, the activity of the bacteria which cause food to go bad is controlled.
Nowadays most foods are dried mechanically. The conventional method of such dehydration (脱水) is to put food in chambers (室) through which hot air is blown at temperature of about ll0"C at entry to about 43"C at exit. This is the usual method for drying such things as vegetables, minced meat, and fish.
Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated steel cylinder (圆筒), then put them into a chamber through which a current of hot air passes. In the first process, the dried material comes off the roller (滚筒) as a thin film which is then broken up into small, though still relatively flakes (薄片). In the second process it falls to the bottom of the chamber as small powder. Where recognizable pieces of meat and vegetables are required, as in soup, the ingredients (成分) are dried separately and then mixed.
Dried foods take up less room and weigh less than the same food packed in cans or
frozen, and they do not need to be stored in special conditions. For these reasons they
are invaluable to the climbers, explorers and soldiers in battle, who have little storage
space. They are also popular with housewives because it takes so little time to cook
them.
小题1:It can be inferred from the passage that ________.
| A．the rattier fish contain as much water as the lean one |
| B．the rattier the fish is, the more water it may contain |
| C．a fatty fish holds less water than a lean one |
| D．the water content of fish has nothing to do with the content of their fat |
| A．particular | B．scientific | C．usual | D．special |
| A．The removal of water in food helps prevent it from going rotten. |
| B．The open-air method of drying food has been known for hundreds of years. |
| C．In the course of dehydration, the temperature of hot current coming from entry to exit is gradually going up. |
| D．The process of drying liquids is much more complex than that of drying solid food. |
| A．the reason why housewives like dried food |
| B．the general convenience of dried food |
| C．the methods of storing food |
| D．the advantages of dried, canned and frozen food |
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