相关信息句为：
Such well-meaning people just don's understand.
A. discontent with animal research.
B. ignorance about medical science.
C. indifference to epidemics.
D. anxiety about animal rights.
49. The author believes that, in face of the challenge from animal rights advocates, scientists should_____.
相关信息句为：
Scientists must communicate their message to the public in a compassionate, understandable way---in human term, not in the language of molecular biology.
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.
50. From the text we learn that Stephen Cooper is_____.
相关信息句为：
Finally, because the ultimate stakeholders are patients, the health research community should actively recruit to its cause not> Stephen Cooper, who has made courageous statements about the value of animal research, but all who receive medical treatment.
A. a well-known humanist.
B. a medical practitioner.
C. an enthusiast in animal rights.
D. a supporter of animal research.
