单项选择题

Which of the following does NOT indicate people's enhanced awareness of the importance of memory

A．More demand for books on memory.
B．More demand for seminars on memory.
C．More demand for memory-enhancing supplements.
D．More demand for coca cola and cigarettes.

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热门试题

单项选择题

It is believed by scientists that traditional medicines

A．can cure all kinds of diseases.
B．may cure some of today's most serious diseases.
C．are no longer useful for modern men.
D．are too cheap to be useful.

单项选择题

It can be seen from the passage that the earth's supply of natural medicines

A．may never be exhausted.
B．may be dropping rapidly.
C．is surprisingly big.
D．is as rich as ever.