单项选择题

Some adult dogs may weigh as much as 200 pounds, but most weigh between 20 and 50 pounds.

A. mature
B. female
C. special
D. wild
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The American Medical Association has called for the sport of boxing (拳击) to be banned.
A. forbidden
B. regulated
C. studied
D. reorganized
单项选择题
Hundreds of years ago cloves were used to remedy headaches.
A. disrupt
B. diagnose
C. evaporate
D. cure
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