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.

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热门试题

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.

单项选择题

Which of the following statements is NOT true

A．Modern medicines are now available all over the world.
B．Many big and modern hospitals are expensive.
C．Traditional medicines are neither mysterious nor magical.
D．Humans have used some kinds of medicines since earliest days.