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阅读理解: 阅读下列短文, 从所给的四个选项中, 选出最佳答案。
People have smoked cigarettes(香烟) for a long time now. The tobacco which is used to make cigarettes was first grown in what is now part of the United States. Christopher Columbus, who discovered America, saw the Indians smoking. Soon the dried leaves were transported (输送) to Europe where smoking began to catch on, In the late 1800s, the Turks made cigarettes popular.
Cigarette smoke contains at least two harmful substances (物质), tar and nicotine. Tar, which forms as the tobacco burns, damages the lungs and therefore affects breathing. Nicotine, which is found in the leaves, causes the heart to beat faster and increases the breathing rate (速度).
Smoking cigarettes is dangerous. The U. S. Public Health Service stated that cigarette smoking is the cause of lung cancer (癌) and several other deadly diseases (疾病). The U. S. government now requires that each package of cigarettes bear a special warning about the dangers of smoking.
1. A good title for this selection is _________.
[ ]
A. Cigarettes in the U. S.
B. Smoking Cigarettes
C. How to Smoke Cigarettes
D. The Effect of Smoking on Your Health
2. The expression "catch on" means _______.
[ ]
A. cost a lot B. slow down
C. become popular D. understand and make use of something
3. Before Columbus discovered America, ______.
[ ]
A. Americans did not smoke cigarettes
B. Europeans did not smoke cigarettes
C. nicotine was not in tobacco
D. Both B and D
4. In the nineteenth century, smoking became popular because of the people in ________.
[ ]
A. India B. America
C. Turkey D. Europe
5. Breathing is affected by ________.
[ ]
A. tar B. nicotine
C. Both A and B D. Neither A nor B
查看习题详情和答案>>阅读理解：
阅读下列短文, 从所给的四个选项中, 选出最佳答案．
People have smoked cigarettes (香烟) for a long time now． The tobacco which is used to make cigarettes was first grown in what is now part of the United States． Christopher Columbus, who discovered America, saw the Indians smoking． Soon the dried leaves were transported (输送) to Europe where smoking began to catch on． In the late 1800s, the Turks made cigarettes popular． Cigarette smoke contains at least two harmful substances (物质), tar and nicotine． Tar, which forms as the tobacco burns, damages the lungs and therefore affects breathing． Nicotine, which is found in the leaves, causes the heart to beat faster and increases the breathing rate (速度)．
Smoking cigarettes is dangerous． The U． S． Public Health Service stated that cigarette smoking is the cause of lung cancer (癌) and several other deadly diseases (疾病)． The U． S． government now requires that each package of cigarettes bear a special warning about the dangers of smoking．
1． A good title for this selection is ________．
[ ]
A． Cigarettes in the U． S． A． B． Smoking Cigarettes
C． How to Smoke Cigarettes D． The Effect of Smoking on Your Health
2． The expression "catch on" means ______．
[ ]
A． cost a lot
B． slow down
C． become popular
D． understand and make use of something
3． Before Columbus discovered America, ________．
[ ]
A． Americans did not smoke cigarettes
B． Europeans did not smoke cigarettes
C． nicotine was not in tobacco
D． both B and C
4． In the nineteenth century, smoking became popular because of the people in _______．
[ ]
A． India B． America C． Turkey D． Europe
5． Breathing is affected by __________．
[ ]
A． tar B． nicotine
C． both A and B D． neither A nor B
查看习题详情和答案>>Maybe ten?year?old Elizabeth put it best when she said to her father，“But，Dad，you can’t be healthy if you’re dead.”
Dad，in a hurry to get home before dark so he could go for a run，had forgotten to wear his safety belt—a mistake 75% of US population make every day.The big question is why.
There have been many myths about safety belts ever since their first appearance in cars some forty years ago.The following are three of the most common.
Myth Number One: It’s best to be “thrown clear” of a serious accident.
Truth: Sorry，but any accident serious enough to “throw you clear” is going to be serious enough to give you a very bad landing.And chances are you’ll have traveled through a windshield (挡风玻璃)or door to do it.Studies show that chances of dying after a car accident are twenty?five times in cases where people are “thrown clear”.
Myth Number Two: Safety?belts “trap” people in cars that are burning or sinking in water.
Truth: Sorry again，but studies show that people knocked unconscious (昏迷) due to not wearing safety belts have a greater chance of dying in these accidents.People wearing safety belts are usually protected to the point of having a clear head to free themselves from such dangerous situation，not to be trapped in them.
Myth Number Three: Safety belts aren’t needed at speeds of less than 30 miles per hour (mph).
Truth: When two cars traveling at 30 mph hit each other，an unbelted driver would meet the windshield with a force equal to diving head first into the ground from a height of 10 metres.
1.Why did Elizabeth say to her father，“But，Dad，you can’t be healthy if you’re dead”？
A.He was driving at great speed.
B.He was running across the street.
C.He didn’t have his safety belt on.
D.He didn’t take his medicine on time.
2.The reason father was in a hurry to get home was that he .
A.wasn’t feeling very well B.hated to drive in the dark
C.wanted to take some exercise D.didn’t want to be caught by the police
3.According to the text，to be “thrown clear” of a serious accident is very dangerous because
you .
A.may be knocked down by other cars
B.may get serious hurt thrown out of the car
C.may find it impossible to get away from the seat
D.may get caught in the car door
4.Some people prefer to drive without wearing a safety belt because they believe .
A.the belt prevents them from escaping in an accident
B.they will be unable to think clearly in an accident
C.they will be caught when help comes
D.cars catch fire easily
5.What is the advice given in the test?
A.Never drive faster than 30 miles an hour.
B.Try your best to save yourself in a car accident.
C.Never forget to wear the safety belt while driving.
D.Drive slowly while you’re not wearing a safety belt.
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