单项选择题

We can learn from the passage that

A．most newly marketed drugs have side-effects
B．established drugs have serious effects
C．any unexpected effect of new drug is worth reporting
D．full reports should be sent of all the effects of all drugs

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单项选择题

The doctor is recommended ______.

A．never to give drugs to people who have previously reacted badly
B．to protect himself by following the rules
C．to cut down the number of deaths due to drugs
D．to investigate whether the patient has a history of sensitivity to drugs

单项选择题

This film ______ this Saturday.

A．shows
B．will show
C．is to be shown
D．is to show