题目内容

Travel is exciting and summer is a busy period for holiday travel. Many people will travel great distances in airplanes, cars or other vehicles. Experts say people should know about other health problems that can strike when traveling by air.

One of these is a condition called hypoxia (缺氧症). It results from a lack of oxygen to the brain. Experts say the body begins losing oxygen minutes after an airplane leaves the ground. The air pressure in a plane during flight is lower than at sea level. This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground. Fewer oxygen molecules (分子) cross the tissues (组织) in the lungs and reach the bloodstream.

The result is a five to twenty percent drop in the amount of oxygen in the blood. This reduces the amount of oxygen that reaches the organs of the body.

One effect of this lack of oxygen to the brain is a headache. When this happens, the heart attempts to fix the situation by beating harder and faster. This can make the traveler feel tired.

These signs of hypoxia are not dangerous in a healthy person. But a drop in oxygen level can cause a health emergency in people with heart or lung problems. They might lose consciousness or even suffer a heart attack.

Experts say that smoking cigarettes and drinking alcoholic liquids also reduce the body’s ability to use oxygen. So they suggest that people not drink alcohol or smoke cigarettes either before or during a flight. They also say persons with heart or lung problems should seek advice from their doctors before flying.

1.The author writes the passage mainly to ___.

A.warn people in airplanes of possible dangers

B.offer some advice on avoiding health problems

C.explain the causes and effects of hypoxia

D.advise people not to smoke or drink alcohol

2.According to the passage, what leads to hypoxia?

A.The brain lacks enough oxygen.

B.The air pressure in a plane is too high

C.Our body needs less oxygen during takeoff.

D.The bloodstream contains no oxygen molecules.

3.The underlined part “fix the situation” means “___”.

A.use more oxygen it needs

B.increase the air pressure

C.reduce the amount of blood

D.bump more blood to the brain

4.Why should passengers not smoke or drink before flying?

A.They weaken the body’s ability to use oxygen.

B.Smoking may pollute the air inside the airplane.

C.Drinking alcohol may raise one’s blood pressure.

D.Drinking is forbidden at the airport.

5.Do you think which the following title is the best title for this passage?

A.Tralling

B.how to travel

C.some suggestions about on the plane while travelling

D.the causes and effects of hypoxia

 

【答案】

1.C

2.A

3.D

4.A

5.D

【解析】文章讲述的是关于坐飞机旅行时会出现的缺氧症的原因和造成的后果。

1.推理判断题,根据第一段的Experts say people should know about other health problems that can strike when traveling by air可知,文章是向读者解释缺氧症的原因和后果。

2.事实细节题,根据第二段It results from a lack of oxygen to the brain可知,是由于大脑缺氧导致

3.推理判断题,根据第三段内容可知,解决这种情况指的是给大脑提供更多的血液。

4.事实细节题,根据最后一段Experts say that smoking cigarettes and drinking alcoholic liquids also reduce the body’s ability to use oxygen可知,

5.主旨大意题,文章讲述的是关于坐飞机旅行时会出现的缺氧症的原因和造成的后果

 

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根据短文完成下面的题

My Unforgettable Travel

  Besides going by car, there are three other ways to get across the country:planes, trains and buses.Air travel is the most expensive of the three but in many ways the easiest and most comfortable.There are hundreds of flights a day criss-crossing the country, and it is easy to make an order.You will get to your destination(目的地)quickly and find the services(服务)at the airports excellent.There will be connecting bus services to the center of town, car rental agencies and porters(出租公司和搬运工).

  Traveling by train is cheaper than by airplane.In the past, train service was poor but in recent years the government has changed the service with AMTRAK, the nationalized train system.You can travel first or second class.Your ticket is for the journey only, sleeping and dining conditions will be extra.The most inexpensive way to travel is by bus.Continental railways and Greyhound can buy special tickets that allow you unlimited travel for a certain period of time.In this way you can stop along the way to visit the places that interest you most.

  If you do travel long distances, be ready for the time changes.There are four time zones(时区)in the continental USA, starting on the East Coast with Eastern Standard Time(EST), then moving west to Central Standard Time(CST), Mountain Standard Time(MST).If you travel east to west, you gain one hour each time you enter a new time zone.

  Seeing America by Car

  A good way to see the USA is by car.Americans love their cars and in the past fifty years they have developed a vast network of roads and freeways to help them reach their destinations.

  As few visitors have their own cars, renting one is the next best thing.You will need a valid driver’s license(it is best to have an international driver’s license)and either international credit cards(信用卡)(Diners, American Express), or a deposit(存折).

  You should start out with a working knowledge of the road.You travel from state to state and this can be very exciting to a newcomer.For example, in some states it is legal(合法)to turn right at a red light if there is no closing traffic, while in other states you will be fined(罚款)for this action.

  People can enjoy vast(广袤的)areas of wild beauty.Throughout the country, animal and plant life is now protected by law, Americans are learning to be conservationists(天然资源保护者).

(1)

The 1st paragraph is told about ________.

[  ]

A.

car is more expensive

B.

there are four ways to travel

C.

the service is a little good

D.

ordering tickets is not easy

(2)

Which do you think it is a better way if you are allowed to travel or stop along the way for some time without limit?

[  ]

A.

train

B.

car

C.

bus

D.

ship

(3)

If you go to west from east you ________ zone.

(4)

If you walk at the red light on the road in some states you feel ________, and see some plants and animas ________.

Since life is short and the world is wide, the sooner you start exploring it, the better. Soon enough the time will come when you are too tired to move farther than the terrace of the best hotel. Go now.

No need, you may say, to tell that. But what I need to tell you is that you will meet with a surprising amount of opposition the moment you try to set out. Rubbish, you will reply. More people go abroad nowadays than ever before; never has travel, particularly among the young, been more strongly visit, of international exchanges. Perhaps not; but none of this, my dear young friends, is travel. Travel is not going on a round coach trip for $ 67 in all, or spending ten days at a hotel by the sea. Travel is when you want to see how much money and resources you have and then set out, alone or with chosen friends, to make an unhurried journey to a distant goal without a set date for your return.

Real travel, then, is independence in action, and is not liked by most parents. They don’t mind your going in a school party to Athens, because they know just where you are and when you’ll be back, and they can therefore permit you the imagination of freedom without for one second letting you beyond their control. But what they cannot bear is that you should travel all on your own, without giving them your address and return date. In fact, their fears are quite reasonable because that shows how much they love you. So in order to enjoy real travel and at the same time put your parents’ mind at ease. It would be really important for you to bear the following advice in mind.

5. Which statement is true according to the passage?

A. People travel more than before.                                  

B. Young people are encouraged to travel abroad.

C. People should not go on a round coach trip for $ 67.

D. Educational visits should not be encouraged as they are not real travel.

6.What does real travel mean according to the writer?

A. It means telling your parents nothing about the travel   

B. It means not knowing where you want to go.

C. It means traveling to a distant goal in an unhurried manner.  

D. It means traveling without any plan.

7. Your parents allow you to travel in a school party because ________.

A. they want you to be truly free                       B. you are still under their control

C. they don’t have time to travel with you          D. they know it’s good for you

8. According to the writer, when you do real traveling, you should ________.

A. never mind how worried your parents are             

B. give your parents your address and return date

C. tell your parents details about your travel       

D. not let your parents worry about you

Air travel is such an everyday experience these days that we are not surprised when we read about a politician having talks with the Japanese Prime Minister one day, attending a meeting in Australia the following morning and having to be off at midday to sign a trade agreement in Hong Kong. But frequent long-distance flying can be so tiring that the traveler begins to feel his brain is in one country, his digestion(消化吸收)in another and his powers of concentration nowhere---in short, he hardly knows where he is.
Air travel is so quick nowadays that we can leave London after breakfast and be in New York in eight hours, yet what really upsets us most is that when we arrive it is lunch time while we have already had lunch on the plane and are expecting dinner.
Doctors say that air travelers are in no condition to work after crossing a number of time zones. Airline pilots, however, often live by their own watches.
【小题1】After a long air travel, a traveler _______.

A.finds himself in a different world
B.finds his brain apart from his body
C.finds himself in Hong Kong the following morning
D.has little sense about where he is
【小题2】The sentence “Airline pilots often live by their own watches. ” means______.
A.they don’t trust others’ watches
B.they don’t change their watches
C.they make a living by their own watches
D.they do as they used to do
【小题3】Doctors suggest the travelers_______?
A.should rest when they arrive in New York from London.
B.should work in good condition since they just finish a long journey.
C.rest in a place with good condition.
D.give up long journey since it makes them tired.


In the United States,train transportation is unpopular compared with cars and airplanes.Most people like traveling by car or by air.
Officials of the United States Department of Transportation made a study in 2001.The study is about how many miles Americans traveled by different means of transportation.They only studied trips longer than 50 miles.The study showed that fifty-six percent of all miles were traveled in personal vehicle.Forty-one percent were traveled in an airplane.Two percent were traveled in a bus.And less than one percent of miles were traveled in a train.
Amtrak is the national provider of train transportation in the United States.In the past ten years,the number of its passengers has increased by eighteen percent.Although the number of passengers has increased,it is still very small now.In countries such as France,Germany,or Japan,more people use trains.
There are several reasons why many people __________________________.
Firstly,Americans love to drive their own cars.On highways,cars can travel as fast as trains.These highways connect all major cities in America.Secondly,many travelers like to be independent.When they use their own cars they can decide when to travel.Thirdly,many buses travel between major cities.Bus travel is less costly than train travel.
In a huge country like the United States,cities are far away from each other.In some cases,travel from one city to another by train may take more than a day.Airplanes can carry passengers over long distances much faster.People who do not want to spend long time traveling by train decide to fly.For these people saving time is the most important thing.
【小题1】What is the best title of the passage? (Please answer within 10 words.)
【小题2】Which sentence in the passage can be replaced by the following one?
It’s convenient for people to decide the start-off time when they travel in their own cars.
【小题3】Please fill in the blank in the fourth paragraph with proper words or phrases to complete the sentence.(Please answer within 10 words.)
【小题4】What means of transportation do you like best when traveling,trains,cars,or planes? Why? (Please answer within 30 words)
【小题5】Translate the underlined sentences in the last paragraph into Chinese.

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