单项选择题

A．Leisure sporting activities.
B．Average age of athletes.
C．Durability of sporting equipment.
D．Public’s impression of the company.
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单项选择题
To define science, we can simply name it as ______.
A．the study of nature and mankind
B．an attempt to pose and prove hypotheses and theories
C．categorized knowledge
D．the study of unrelated natural phenomena
单项选择题
Which of the following is implied in the passage
A．Pure scientists should not be blamed for ignoring the practical side of their discoveries.
B．Today few people have any notion of the meaning of science.
C．In true sciences, it is not difficult to distinguish fact from fiction.
D．Practical-minded people can understand the meaning and objectives of pure science.
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