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单项选择题

Human beings differ from animals because they can ______.

A．adapt to their environment
B．control their environment
C．adapt the environment to their need
D．observe and understand their environment
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单项选择题This text indicates that the basic component of scientific research is ______.

A．observation
B．hypothesis
C．reasoning
D．interpretation

单项选择题According to the context, the simple reading done by the computer mostly refers to ______.

A．reading in search of intended information only
B．looking for unexpected information only
C．reading to locate texts to be used in teaching
D．reading to set up superior master indexes

单项选择题The writer believes that reading by the computer is advisable chiefly because ______.

A．it saves a lot of time to find information needed
B．it reads more efficiently than a human mind
C．it covers a much wider range of reference
D．it guarantees reading efficiency and validity

单项选择题The writer's attitude towards the use of a computer can be best described as ______.

A．conservative
B．subjective
C．uncertain
D．favorable

单项选择题What does the writer mainly talk about in this passage

A．The deficiencies of the library in providing information.
B．The different applications of the computer and the library.
C．The advantages and disadvantages of the computer and library.
D．The advantages of the computer in search of information.