单项选择题

A successful scientist______.

A．has wide interests and reads original books or articles
B．is a person with originality, which comes from his diverse knowledge
C．not only reads widely but also cultivates diverse interests
D．benefits more from teaching than from his research

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单项选择题

In the author's opinion ______,

A．if a person has a background of knowledge, he can read superficially over a wide field
B．an adult can build foundations in science no higher than a young man
C．a thorough grounding in the fundamental sciences is absolutely necessary for a person hoping to derive value from superficial reading over a wide field
D．a mass of detailed technical information is indispensable to creative thinking

单项选择题

According to the passage, which of the following is true

A．Putting fitness programs into effect has been a usual practice for American companies.
B．There is no very convincing evidence to relate fitness programs to increased profits.
C．Being fit is now a requirement for one to apply for a job in an American company.
D．The Fitness program is not so costly as one imagines.