题目
题型:广东省模拟题难度:来源:
world. The gas has been a problem since people first began burning fuels to cook food or to create
heat. It is a problem in all parts of the world that experience cold weather.
Carbon monoxide is called the silent killer because people do not know it is in the air. The gas
has no color. It has no taste. It has no smell. It does not cause burning eyes. And it does not cause
people to cough. But it is very deadly. It robs the body of its ability to use oxygen.
Carbon monoxide decreases the ability of the blood to carry oxygen to body tissues. It does this
by linking with the blood. When the gas links with the blood, the blood is no longer able to carry
oxygen to the tissues that need it.
Damage to the body can begin very quickly from large amounts of carbon monoxide. How
quickly this happens depends on the length of time a person is breathing the gas and the amount of
the gas he or she breathes in.
Carbon monoxide poisoning has warning signs. But people have to be awake to recognize them.
Small amounts of the gas will cause a person"s head to hurt. He or she may begin to feel tired. The
person may feel sick. The room may appear to be turning around. The person may have trouble
thinking clearly. People develop severe head pain as the amount of gas continues to enter their blood.
They will begin to feel very tired and sleepy. They may have terrible stomach pains.
Medical experts say carbon monoxide affects people differently. For example, a small child will
experience health problems or die much quicker than an adult will. The general health of the person
or his or her age can also be important. An older adult with health problems may suffer the effects
of carbon monoxide more quickly than a younger person with no health problems. People with
heart disease may suffer chest pains. They may begin to have trouble breathing.
B. Because it is not easily noticed.
C. Because it kills and injures people.
D. Because it always harm people.
B. It decreases the amount of blood in the body.
C. It makes body tissues full of blood.
D. It makes the blood less able to carry oxygen.
B. suffer a severe headache
C. go around in the room
D. have a terrible stomachache
B. Young people are more severely affected than old people.
C. People in poor health may have more severe consequences.
D. People with heart problem only suffer from chest pains.
B. list the damages that carbon monoxide brings to people
C. give advice on how to avoid carbon monoxide poisoning
D. introduce some knowledge about carbon monoxide poisoning
答案
核心考点
试题【阅读理解。 Carbon monoxide(一氧化碳) poisoning kills and injures many people and anim】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Tuesday.They found that when people listened to their favorite music, their blood vessels (血管)
dilated in much the same way as when they are laughing, or taking blood medications.
"We have a pretty impressive effect," said Dr Michael Miller, director of preventive cardiology
(心脏病学) at the University of Maryland Medical Center in Baltimore.
"Blood vessel diameter improved," he said. "The vessel opened up pretty significantly. You can
see the vessels opening up with other activities such as exercise." A similar effect is seen with drugs
such as statins.
When blood vessels open up more, blood flows more smoothly and is less likely to form the
clots (凝块) that cause heart attacks and strokes. "We are not saying to stop your statins or not to
exercise but rather to add this to an overall program of heart health," said Miller, who presented his
findings to a meeting of the American Heart Association in New Orleans.
Miller"s team tested 10 healthy, non-smoking men and women, who were told to bring their
favorite music. They spent half an hour listening to the recordings and half an hour listening to music
they said made them feel anxious while the researchers did ultrasound tests designed to show blood
vessel function.
Compared to their normal baseline measurements, blood vessel diameter increased 26 percent
on average when the volunteers heard their joyful music. Listening to music they disliked - in most
cases in this group heavy metal - blood vessels narrowed by six percent, Miller said.
Miller said he came up with the idea after discovering that laughter caused blood to literally flow
more smoothly. "I asked myself what other things make us feel really good, besides calories from
dark chocolate of course. Music came to mind. ... It makes me feel really good," he said.
Most of the volunteers chose country music but Miller said the style is not so important rather
than what pleases each individual.
B. move
C. change
D. increase
B. Listening to unpleasant music.
C. Bursting into laughter.
D. Taking drugs like statins.
B. music is better than chocolate for your health
C. the style of music has different effects on different people
D. a person"s overall health is more influenced by how much exercise he gets
B. A school textbook.
C. A medical brochure(手册).
D. A local newspaper.
B. Research into Blood Vessel
C. Music and Heart Attack
D. Music and Happiness
up by the sea.
Storms and huge waves are a constant threat and none of Tuvalu"s nine little islands is more than
five meters above sea leavel, Salt water is already entering the country"s drinking water supply, as wel
l as damaging plants that produce fruit and vegetable. 1___________
2____ __. Venice, a historic city in Italy best known for its canals, has sunk about 24 cm over the
past 100 years. Experts say that it will have sunk another 20-50cm by 2050. A century ago,
St. Mark"s Square, the lowest point in the city, flooded about nine times a year, Nowadays, it happens
more that 100 times. While Venice is slowly sinking into the mud on which it stands, Tuvalu"s rising sea
level is caused by global warming.
The average global temperature has increased by almost 0.5 centigrade degrees over the past century; scientists expect it to rise by extra 1-3 degrees over the next 100 years.
Warmer weather makes glaciers(冰川)melt, adding more water to the ocean.The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 10-25 cm in the last 100 years.
3______. Through burning coal, oil and gas, people have been increasing the greenhouse gases in the
atmosphere, such as CO2. This adds to the powe
![](http://img.shitiku.com.cn/uploads/allimg/20191221/20191221085945-83820.png)
B. Should this come true
C. Without urgent help, the country"s days are numbered.
D. But Tuvalu is not the first place to face sinking into the sea
E. The sea level could rise by one meter this century
F. people face a lot of pollution
G. much has been done about our planet
more deeply into your consciousness, a new study has found.
And having one or two glasses of wine a day may increase your ability to remember, and even
help with Alzheimer (老年痴呆症) sufferers. The study at Auckland University was undertaken by
Dr. Maggie Kalev and Professor Mathew During.
The two researchers found moderate levels of alcohol consumption, equivalent to one or two
glasses of wine a day, could augment memory.
In contrast, high levels of alcohol decreased the ability of new brain cells to develop and mature.
"Low levels of alcohol promoted neutral memories, such as remembering objects," said Dr. Kalev.
"However, contrary to popular belief, we also found that excessive levels of alcohol enhanced
memories of highly emotional stimuli (刺激), meaning the concept of "drinking to forget" is unlikely
to be true."
"Our work suggests that heavy drinking actually reinforces negative memories."
The study also identified the way low doses of alcohol improved memory.
Dr. Kalev said a "very important" brain receptor(受体), called an NMDA receptor, appeared
to be necessary for the process.
Testing done on rats showed if they did not have enough NMDA receptors, their memory did
not improve when given low alcohol doses.
However, rats which did show high numbers of NMDA receptors exhibited memory improvement
when given small amounts of alcohol.
"Pathways by which memory is laid down are unclear, but NMDA receptor is critical in this
process," Dr. Kalev said.
"Building on this knowledge may help in the treatment of memory disorders, such as Alzheimer"s
disease and other dementias."
The results of the study are published in Journal of Neuroscience.
B. The good effect of alcohol
C. The importance of NMDA receptor
D. Moderate drinking can improve memory
B. An NMDA receptor is the only factor for the process.
C. According to the testing done on rats, their memory did not improve when given low alcohol doses if they did not have enough NMDA receptors.
D. It is sure that the knowledge of the research can help to treat the memory disorders.
![](http://img.shitiku.com.cn/uploads/allimg/20191221/20191221085859-60838.png)
B. science report
C. science fiction
D. a novel
B. The alcoholic amount beneficial to individuals is certain.
C. It is advised that one should not drink too much to forget emotional stimuli.
D. The alcoholic degree of wine is very critical in the research.
refer to environmentally friendly houses, factories, and offices.
Green building means "reducing the impact(影响)of the building on the land", Taryn Holowka of
the U.S. Green Building Council in Washington, D. C., said.
According to Holoeka, building account for 65 percent of total U.S. electricity use.
Bur green building can reduce energy and water use. Also, the buildings are often located near public
transportation such as buses and subways, ______________________________________.That
could be good for the environment, because cars use lots of gas and give off pollution. Green buildings
are often built on developed land, so that the buildings don"t destroy forest.
Marty Dettling is project manger for a building that put these ideas into action. The Solaire has been
called the country"s first green high-rise building. According to Dettling, "We"ve reduced our energy use
by one-third and our water by 50 percent."
T
![](http://img.shitiku.com.cn/uploads/allimg/20191221/20191221085839-47733.png)
panels which change the sun"s energy into electricity, " Dettling explained.
The Solaria also has lights that automatically turn off when people leave the room. In addition, the
building has lots of windows, allowing people to use the sun for light during the day. The Solaire cuts
water reusing it.
Nor everyone is eager to move into a green building, however. Some people think that things like
solar panels cost more money than more traditional energy sources. Anyhow, Holowka said, "It"s going
to be big.
![](http://img.shitiku.com.cn/uploads/allimg/20191221/20191221085840-81792.png)
______________________________________________________________________________.
Green buildings will become popular in the future.
______________________________________________________________________________.
______________________________________________________________________________.
_____________________________________________________________________________.
_____________________________________________________________________________.
medical history, t
![](http://img.shitiku.com.cn/uploads/allimg/20191221/20191221085801-75501.png)
sickness that swept through the Greek army attacking Syracuse in 395 BC. Flu is a disease that
moves most quickly among people living in crowded conditions, hence it is likely to attack armies.
In April 1918, flu broke out among American troops stationed in France. It quickly spread
through all the armies but caused relatively few deaths. Four months later, however, a second
outbreak started which proved to be a killer. It killed not only the old and already sick but also
healthy young adults. It went through every country in the world, only a few distant islands in the
South Atlantic and the Pacific remaining untouched. Before the great outbreak ended, it had killed
at least 15 million people.
Medical science is still not certain what hit us in 1918. The virus of influenza (流感病毒) was
not found until 1933, so all that today can be said about the 1918 outbreak is the kind of antibodies
it produced.
The first big advance was also made in 1933, then a team of British doctors found the type A
influenza virus. In 1940, a doctor of the United States found type B. Later type C was found, along
with many subgroups of type A and B. Vaccines (疫苗) were prepared and used widely by the
armies during the Second World War to prevent outbreaks.
The flu virus proved trickier (奸诈) than most. A vaccine good against one type gave a protection
against another. Indeed type A virus changes its nature so quickly that a perfectly good vaccine may
lose its value because of the change. This increases the need for the speedy discovery of flu outbreaks,
so that stocks(家畜) of the right vaccine can be prepared quickly after an outbreak. Starting such a
warning system was one of the first things done by the World Health Organization. .
B. Because it spread through Greek army long ago .
C. Because it spread through the crowded most quickly.
D. Because an army moves more often.
A. One type.
B. Two types.
C. Three types.
D. Four types
B. Several million.
C. Seven million
D. Fifteen million.
B. A Group of American doctors first discovered the types of influenza
C. All kinds of vaccine can not prevent every kind of influenza virus.
D. The earliest outbreak of disease mentioned happened in the year 412 BC.
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