[单项选择]Why do forests in many parts of the world slowly disappear
A. New trees are not looked after properly.
B. Many trees have been cut down by man.
C. Man has not paid enough attention to planting trees.
D. All of the above.

[单项选择]Why do many people like vegetable gardening
A. Because gardening is something like art and science.
B. Because they regard it as a productive activity.
C. Because it gives them pleasure to spend time in winter.
D. Because vegetables can grow in gardens even in winter.

[单项选择]Why do many scientists think animals are basically sleepwalkers
A. Because animals learn to carry out complex actions.
B. Because animals are trained to carry out complex actions.
C. Because animals carry out complex actions in response to stimuli.
D. Because animals carry out complex actions without awareness.

[单项选择]Why do so many people own fax machines today
A. Because the fax is a symbol of success.
B. Because it is the fastest way of sending a document.
C. Because it is more reliable than sending a letter.
D. Because it is still too expensive for most people.

[单项选择]In the fourth paragraph, why do many companies prefer to diversify rather than stay in a concentrated market
A. To reduce the risk
B. To spread the risk
C. To earn a high rate of return
D. To strengthen the market position

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Why do so many Americans distrust what they read in their newspapers The American Society of Newspaper Editors is trying to answer this painful question. The organization is deep into a long self analysis known as the journalism credibility project. Sad to say, this project has turned out to be mostly low-level findings about factual errors and spelling and grammar mistakes, combined with lots of head-scratching puzzlement about what in the world those readers really want. But the sources of distrust go way deeper. Most journalists learn to see the world through a set of standard templates (patterns) into which they plug each day’s events. In other words, there is a conventional story line in the newsroom culture that provides a backbone and a ready made narrative structure for otherwise confusing news. There exists a social and cultural disconnect between journalists and their readers, which helps explain why the "standard templates" of the newsroom seem alien to
A. working attitude
B. conventional lifestyle
C. world outlook
D. educational background

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Passage 3 Why do so many Americans distrust what they read in their newspapers The American Society of Newspaper Editors is trying to answer this painful question. The organization is deep into a long self - analysis known as the journalism credibility project. Sad to say, this project has turned out to be mostly low - level findings about factual errors and spelling and grammar mistakes, combined with lots of head -scratching puzzlement about what in the world those readers really want. But the sources of distrust go way deeper. Most journalists learn to see the world through a set of standard templates (patterns) into which they plug each day’s events. In other words, there is a conventional story line in the newsroom culture that provides a backbone and a ready - made narrative structure for otherwise confusing news. There exists a social and cultural disconnect between journalists and their readers, which helps explain why the "standard templates" of th
A. Needs of the readers all over the world.
B. Causes of the public disappointment about newspapers.
C. Origins of the declining newspaper industry.
D. Aims of a journalism credibility project.

[单项选择]Why do so many older people fail to remember what happened a day ago though they can remember what happened years ago
A. Because they are more interested in the past.
B. Because their past experiences are always more impressive than the present ones.
C. Because they have difficulty associating memories with meanings.
D. Because old memories and new memories are kept in different regions.

[单项选择]Many Americans do not understand why there is so much international criticism of the US policy on ________change.
A. atmosphere
B. sky
C. weather
D. climate

[单项选择]In many parts of the world, man has not realized the importance of the role of trees. He has cut them down in large numbers______that without them he has lost the best friends he had.
A. then found
B. only to find
C. but found
D. therefore found

[单项选择]In many parts of the world the only _______ water supply lies below the ground．
A. continuous
B. permanent
C. instant
D. constant