Passage four
Some pessimistic experts fleel that the automobile is bound to fall into disuse. They see a day in the not too-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of urban travel in the foreseeable future.
The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the futtire should be far more pollution-free than present types.
Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion(拥挤). One proposed solution to this problem is the automated highway system.
When the auto enters the highway system, a retractable(可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway t
A. its power source
B. its driving system
C. its mollitoring system
D. its seating capacity
Passage Four
For some time past it has been widely accepted that babies and other creatures learn to do things because certain acts lead to" rewards"; and there is no reason to doubt that this is true. But it used also to be widely believed that effective rewards, at least in the early stages, had to be directly related to such basic physiological "drives" as thirst or hunger. [n other words, a baby would learn if he got food or drink or some sort of physical comfort, not otherwise.
It is now clear that this is not so. Babies will learn to behave in ways that produce results in the world with no reward except the successful outcome.
Papousek began his studies by using milk in the normal way to "reward" the babies and so teach them to carry out some simple movements, such as turning the head to one side or the other. Then he noticed that a baby who had had enough to drink would refuse the milk but would still g
A. the lights were directly related to some basic "drives"
B. the sight of the lights was interesting
C. they need not turn back to watch the lights
D. they succeeded in "switching on" the lights
Some personal characteristics play a
vital role in the development of one’s intelligence. But people fail to realize
the importance of cultivating these factors in young people. The so-called "non-intelligence factor" include {{U}} (21) {{/U}} feelings, will, motivation, interests and habits. After a 30-year follow-up study of 8,000 males, American psychologists {{U}} (22) {{/U}} that the main cause of disparities in intelligence is not intelligence {{U}} (23) {{/U}} , but non-intelligence factors including the desire to learn, will-power and self-confidence. {{U}} (24) {{/U}} people all know that one should have definite objectives, a strong will and good learning habits, quite a number of teachers and parents don’t pay much attention to {{U}} (25) {{/U}} these factors. Some parents are greatly worried {{U}} (26) {{/U}} A. that B. how C. why D. which 我来回答: 提交
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