题目内容
. About one fourth of the families in the city have private cars and this number _____ to double in five years.
A. is expecting B. has expected C.is expected D. will expect
C

Do fight against painting pollution
Do you know what kind of things the young people are reading? More and more 21_ and teachers have noticed another kind of pollution, which comes from the printed papers 22 on streets.
These printed things 23 newspapers but have hardly anything to do with _24_. You can only find reading materials badly made up there—some are too strange for anyone to 25 ; others are frightening stories of something _26_. However, many of the young readers are getting interested in such 27 reading, which 28 them what they should pay for their breakfast and brings them nightmares and immoral ideas in 29 . Homework is left 30 and daily games lost.
These sellers stand about on streets selling their papers well. The writers, publishers and printers, 31 they are, we never know, are 32 their silent money.
The sheep-skinned wolf’s story seems to have been forgotten once again. Why not 33 this kind of thing? Yes, both teachers and parents have asked each other for more strict control of the young readers. 34 , the more you want to forbid it, the more they want to have a look at it. 35 you may even find several children, driven by their curious natures, 36 one patched paper, which has traveled from hand to hand.
It really does 37 to our society. It has already formed a sort of moral pollution. The 38 teachers and parents need more powerful support in their protection of the young generation. At the same time, the young 39 need more interesting books to help them 40 those ugly paper.
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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.
【小题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 |
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. |
A.use more oxygen it needs |
B.increase the air pressure |
C.reduce the amount of blood |
D.bump more blood to the brain |
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. |
A.Tralling |
B.how to travel |
C.some suggestions about on the plane while travelling |
D.the causes and effects of hypoxia |
It was a very foggy day in London. The fog was so thick that it was impossible to see more than a foot or so. Buses, cars and taxis were not able to run and were standing by the side of the road. People were trying to find their way about on foot but were losing their way in the fog. Mr. Smith had a very important meeting at the House of Commons and had to get there but no one could take him. He tried to walk there but found he was quite lost. Suddenly he bumped into a stranger. The stranger asked if he could help him. Mr. Smith said he wanted to get to the Houses of Parliament. The stranger told him he would take him there. Mr. Smith thanked him and they started to walk there. The fog was getting thicker every minute but the stranger had no difficulty in finding the way. He went along one street, turned down another, crossed a square and at last after about half an hour’s walk they arrived at the Houses of Parliament. Mr. Smith couldn’t understand how the stranger found his way. “It is wonderful,” he said. “How do you find the way in the fog?”
“It is no trouble at all to me,” said the stranger, “I am blind.”
【小题1】According to the passage, we can infer that “bump into” means _______.
A.knock off |
B.meet by chance |
C.strike |
D.traffic accident |
A.The stranger has a better sight than Mr. Smith. |
B.Heavy fog can cause traffic accidents. |
C.It’s easy to get lost in a foggy day. |
D.The fog was getting thicker and thicker. |
A.Because he is a local inhabitant of London. |
B.Because he lives next to the Houses of Parliament. |
C.Because he is familiar with the route. |
D.Because he finds the way not by sight but by heart. |
A.London is a foggy city. |
B.Mr. Smith works for the government. |
C.A blind stranger led the way for Mr. Smith in a foggy day. |
D.Mr. Smith had a very important meeting and lost his way in the fog. |