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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单项选择题

What is the best title for the passage A) Esperanto—An Artificial Language. C) Esperanto—People's Hope. B) Esperanto—A Language For All. D) Esperanto—A Nice Thought.

A．What is the best title for the passage
B．Esperanto—An Artificial Language.
C．Esperanto—A Language For All.
D．Esperanto—People's Hope.
E．Esperanto—A Nice Thought.

单项选择题

Tile word challenged in Para. 3 most probably means ______. A) fought against C) criticized B) doubted or suspected D) disapproved

A．Tile word "challenged" in Para. 3 most probably means ______.
B．"fought against"
C．"doubted or suspected"
D．"criticized"
E．"disapproved\