单项选择题

The last paragraph indicated______.

A．how rabies was eventually wiped out
B．the rabies immunization of dogs by vaccination
C．how effective the rabies vaccine is
D．anti-rabies vaccine is very important

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单项选择题A rabid animal is most dangerous during the early stage of the disease because______.

A．it becomes restless, nervous and violent
B．its bite is fatal
C．the potential danger of the sick animal may be ignored
D．it will attack people at any time

单项选择题Research in the early 19th century showed______.

A．rabies was an infectious disease
B．man and all warm-blooded animals were easily infected with rabies
C．stray dogs should be destroyed
D．the disease had been permanently eliminated in some big cities