Much can be done. Scientists could “adopt” middle school classes and present their own research. They should be quick to respond to letters to the editor, lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth. Research institutions could be opened to tours, to show that laboratory animals receive humane care. Finally, because the ultimate stakeholders are patients, the health research community should actively recruit to its cause not only well-known personalities such as Stephen Cooper, who has made courageous statements about the value of animal research, but all who receive medical treatment. If good people do nothing there is a real possibility that an uninformed citizenry will extinguish the precious embers of medical progress.

　　50. From the text we learn that Stephen Cooper is

　　[A] a well-known humanist.

　　[B] a medical practitioner.

　　[C] an enthusiast in animal rights.

　　[D] a supporter of animal research.

　　[答案] D

　　[解题思路]

　　Stephen Cooper出现在文章的最后一段，对他的描述是“who has made courageous statements about the value of animal research”(他对动物实验的价值勇敢地进行了肯定)，显然他是支持动物研究的，答案为D。C选项与原文意思相反，而A、B对Cooper的身份定位都是原文没有提到的。

　　[题目译文]

　　从文中我们可以了解到，斯蒂芬•库柏是

　　[A] 一个著名的人道主义者

　　[B] 一个行医者

　　[C] 动物权利的热心者

　　[D] 动物研究的支持者