单项选择题

From the passage we can learn that ______.

A．Jack's trouble is serious
B．the family doctor has been called in
C．people depend too much on antibiotics for small infection
D．most people prefer antibiotics to any other medicine

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单项选择题

The cause(s) of the excessive use of antibiotics is (are) ______ according to the passage.

A．that some doctors prescribe them too freely
B．that patients ask for them even for minor conditions
C．the ignorance of the body defence systems
D．all of the above

单项选择题

The disadvantage (s) of taking antibiotics is (are) that ______.

A．the cure courses are too long
B．the longer cure courses increase the risk of resistance to the drugs
C．they even kill harmless organisms
D．all of the above