（Par1， Passage 4）
But laziness can be more harmful than that， and it is often caused by more complex reasons than simple wish to avoid work

ssage？

A．It is good for people.

B．It actually does more harm than good.

C．It can help people keep healthy.

D．It can give them more energy.

It can be inferred from the passage that scientists of the 18th century ______.

A．thought they knew a lot and could solve most problems of science

B．knew that they were ignorant and wanted to know more about nature

C．did more harm than good in promoting man's understanding of nature

D．were afraid of facing up to the realities of scientific research

It can be inferred from the passage that scientists of the 18th century ______.

A．thought they knew a lot and could solve most problems of science

B．knew that they were ignorant and wanted to know more about nature

C．did more harm than good in promoting man's understanding of nature

D．were afraid of facing up to the realities of scientific research

It can be inferred from the passage that scientists of the 18th century ______.

A．thought that they knew a great deal and could solve most problems of science

B．were afraid of facing up to the realities of scientific research

C．knew that they were ignorant and wanted to know more about nature

D．did more harm than good in promoting man's understanding of nature

It can be inferred from the passage that scientists of the 18th century ______.

A．thought that they knew a great deal and could solve most problems of science

B．were afraid of facing up to the realities of scientific research

C．knew that they were ignorant and wanted to know more about nature

D．did more harm than good in promoting man's understanding of nature

laziness is immoral, that it is wasteful, and that lazy people will never gain anything in life. But laziness can be more harmful than that, and it is often caused by more complex reasons. Some people who appear to be lazy are suffering from much more serious problems. They may not trust their fellow workers and they are unable to join in any group task for fear of being laughed at or for fear of having their ideas stolen. These people who seem lazy may be affected by a fear of failure that prevents successful work. Some people are so busy planning great deals that they are unable to deal with "easier" work on hand. Still others are not avoiding work; strictly speaking, they are simply putting off their work. aziness, however, can actually be helpful. Some people may look lazy while they are really thinking, planning and researching. We should all remember that great scientific discoveries happened by chance. Newton wasn't working on the farm when the apple hit him and he devised the theory of gravity. All of us would like to have someone "lazy" build the car we buy, particularly if that "laziness" were caused by the worker's taking time to check each step of his work and to do his job right. And sometimes, being "lazy" — that is, taking time off for a rest—is good for the overworked students or executives. Taking a rest can be particularly helpful to the sportsman who is trying too hard or the doctor who is simply working himself overtime too many evenings in the hospital. So be careful when you want to call someone lazy. That person may be thinking, resting, or planning his or her next work.

(1). The main idea of this passage is that ________ .

A. laziness is a bad habit that everyone wants to get rid of

B. there are disadvantages and advantages in being lazy

C. laziness is the sign of very serious emotional problems

D. lazy people usually do their work more carefully

(2). Which of the following statements is mentioned in the passage？

A. Laziness is a kind of mental disease.

B. Laziness is more beneficial than harmful.

C. Laziness cannot be explained.

D. Laziness is sometimes due to a fear of failure.

(3). Which of the following ideas does the passage support？

A. Most of the time laziness is a good quality.

B. Most assembly workers are lazy.

C. The word "laziness" is sometimes misused.

D. Most overworked people are lazy.

(4). The author's attitude towards laziness is ________________.

A. objective

B. subjective

C. critical

D. humorous

(5). As used in this passage, the word "devised" (in Paragraph 2 ) probably means _________ .

A. understood

B. wrote

C. created

D. proved

It can be inferred from the passage that scientists of the 18th century ______.

A．thought that they knew a great deal and could solve most problems of science

B．were afraid of facing up to the realities of scientific research

C．knew that they were ignorant and wanted to know more about nature

D．did more harm than good in promoting man's understanding of nature

According to the passage, cigarette can do harm to all the following EXCEFF ______.

A．lung

B．mouth

C．heart

D．eye

（Par1, Passage 4）

Flying over a desert area in an airplane, two scientists looked down with their trained eyes at trees and bushes