单项选择题

The author believes that, in face of the challenge from animal rights advocates, scientists should ______.

A．communicate more with the public
B．employ hi- tech means in research
C．feel no shame for their cause
D．strive to develop new cures
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单项选择题
The example of the grandmotherly woman is used to show the public's ______.
A．discontent with animal research
B．ignorance about medical science
C．indifference to epidemics
D．anxiety about animal rights
单项选择题
Misled people tend to think that using an animal in research is ______.
A．cruel but natural
B．inhuman and unacceptable
C．inevitable but vicious
D．pointless and wasteful
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