When we see a cigarette box, we’ll see “ Smoking is harmful to your health” on it. Children are not    36  to smoke by their parents or teachers. But in many countries  37 is becoming a bigger problem for young people. Most smokers   38  in their teens or earlier.
Some students think smoking is very cool, and they can see many people smoking around them. They want to have a   39 .
“If young people start smoking early, they will probably get addicted （上瘾的）to nicotine（尼古丁）. And it will be very hard to  40   later on,” said a professor. A study shows smoking is a problem for many Chinese teens.  41    can we do to make them stop smoking?
Some people think we can make a law. Teenagers under 18 are not allowed to smoke,   42   they should be fined. Parents should give up smoking. They can set an example （树立榜样）43   their children.
“Every year about four million people die of smoking. And if people  44   smoking, the number will increase （增加）10 million a year from now on,” said the World Health Organization. So we must learn and tell others about the  45  of smoking.

It was the last day of the final exam in a college. On the steps of building, a group of engineering students were waiting for the last exam. On their faces was confidence（自信的）. 

They knew the exam would be easy. The professor (a teacher at a college) had said they could bring any books or notes during the test.

Right after they came into the classroom. The professor handed out the papers. There were only five questions on it.

Three hours passed. Then the professor began to collect the papers. The students no longer looked confident. On their faces was nervous expression（表情）. The professor watched the worried faces before him, and then asked, “How many of you have finished all five questions?” No hand was raised. “How many of you have answered four?” Still no hands. “Three? Two?” The students moved restlessly in their seats. “One, then? Certainly somebody has finished one.” But the class kept silent. The professor said, “That is exactly what I expected. I just want to make you know clearly that even though you have completed four years of engineering. There are still many things about the subject you don’t know. These questions you could not answer are common in everyday practice.” Then, smiling, he added, “You will all pass this course, your education has just begun.”

The years have obscured the name of this professor, but not the lesson he taught.

1. Why did the students think the exam was easy at first?

2.What does the underlined word “obscured” mean in the last paragraph?

3.. What’s the best title for the article?

It was the last day of the final exam in a college. On the steps of building, a group of engineering students were waiting for the last exam. On their faces was confidence（自信的）. 
They knew the exam would be easy. The professor (a teacher at a college) had said they could bring any books or notes during the test.
Right after they came into the classroom. The professor handed out the papers. There were only five questions on it.
Three hours passed. Then the professor began to collect the papers. The students no longer looked confident. On their faces was nervous expression（表情）. The professor watched the worried faces before him, and then asked, “How many of you have finished all five questions?” No hand was raised. “How many of you have answered four?” Still no hands. “Three? Two?” The students moved restlessly in their seats. “One, then? Certainly somebody has finished one.” But the class kept silent. The professor said, “That is exactly what I expected. I just want to make you know clearly that even though you have completed four years of engineering. There are still many things about the subject you don’t know. These questions you could not answer are common in everyday practice.” Then, smiling, he added, “You will all pass this course, your education has just begun.”
The years have obscured the name of this professor, but not the lesson he taught.
【小题1】 Why did the students think the exam was easy at first?

When we see a cigarette box, we’ll see “ Smoking is harmful to your health” on it. Children are not    36  to smoke by their parents or teachers. But in many countries  37 is becoming a bigger problem for young people. Most smokers   38  in their teens or earlier.

Some students think smoking is very cool, and they can see many people smoking around them. They want to have a   39 .

“If young people start smoking early, they will probably get addicted （上瘾的）to nicotine（尼古丁）. And it will be very hard to  40   later on,” said a professor. A study shows smoking is a problem for many Chinese teens.  41    can we do to make them stop smoking?

Some people think we can make a law. Teenagers under 18 are not allowed to smoke,   42   they should be fined. Parents should give up smoking. They can set an example （树立榜样）43   their children.

“Every year about four million people die of smoking. And if people  44   smoking, the number will increase （增加）10 million a year from now on,” said the World Health Organization. So we must learn and tell others about the  45  of smoking.