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

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热门试题

单项选择题

The purpose of the article is to tell us ______.

A．the effect of antibiotics
B．not to use antibiotics unless necessary
C．that antibiotics are harmfull
D．that our natural defence systems are superior to antibiotics

单项选择题

The author speaks of Esperanto ______.

A．in an objective way
B．in an unfavorable way
C．in a subjective way
D．in a favorable way