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发布时间:2023-12-30 21:29:49

[单项选择]{{B}}第三篇{{/B}}
Babies’ Response

For some time in the 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 also used to be widely believed that effective rewards, at least in the early stages, had to be directly related to such basic physiological(生理的) "drives" as thirst or hunger. In 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 mo
A. would make learned responses when it saw the milk
B. would carry out learned movements when it had enough to drink
C. would continue the simple movements when it had enough to drink
D. would turn its head to right or left when it had enough to drink

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[单项选择]{{B}}第三篇{{/B}}
Babies’ Response

For some time in the 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 also used to be widely believed that effective rewards, at least in the early stages, had to be directly related to such basic physiological(生理的) "drives" as thirst or hunger. In 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 mo
A. are directly related to pleasure
B. will meet their physical needs
C. will bring them a feeling of success
D. will satisfy their curiosity
[单项选择]一本书内有三篇文章,第一篇文章的页数分别是第二篇页数和第三篇页数的2倍和3倍,已知第三篇比第二篇少10页,则这本书共有()。
A. 100页
B. 105页
C. 110页
D. 120页
E. 以上结果均不正确
[单项选择]{{B}}第三篇{{/B}}
{{B}} Sunbath and Skin Cancer{{/B}}
In the summer, millions of Americans will offer up their bodies to the sun rays. A tan indicates health and beauty, and most sun worshippers will sacrifice a lot to achieve it, including themselves.
With each hour, the sun’s ultraviolet (紫外线的) radiation produces irreversible (不可逆的) damage, hastening the development of unsightly wrinkles. And with each year on the beach or rooftop, the sunbather increases his risk of getting skin cancer. Skin cancer is by far the most common form of cancer. An estimated 400,000 new cases will be detected this year in the United States, and almost all of them can be blamed on over-exposure to the sun.
Fortunately ,most of these cancers are highly curable. But they can be disfiguring and take time t
A. Sunburn.
B. The loss of skin elasticity.
C. Thickness of epidermis.
D. The deterioration of dermis.

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