单项选择题

The author asserts that scientists ______.

A．shouldn't replace "scientific method" with imaginative thought
B．shouldn't neglect to speculate on unpredictable things
C．should write more concise reports for technical journals
D．should be confident about their research findings

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单项选择题

The author implies that the results of scientific research ______.

A．may not be as profitable as they are expected
B．can be measured in dollars and cents
C．rely on conformity to a standard pattern
D．are mostly underestimated by management

单项选择题

The writer says that a blind baby is doubly handicapped in comparison to a sighted child because ______.

A．his world is completely dark
B．he can never make eye contact with other people
C．he has no visual stimulation from his surroundings
D．he can not perceive the world with his eyes