66. The author begins his article with Edmund Burke's words to ____.

1. call on scientists to take some actions
2. criticize the misguided cause of animal rights
3. warn of the doom of biomedical research
4. show the triumph of the animal rights movement

67. The example of the grandmotherly woman is used to show the public's ____.

1. discontent with animal research
2. ignorance of medical science
3. indifference to epidemics
4. anxiety about animal rights

68. The author believes that, in face of the challenge from the animal right advocates, scientists should ____.

1. communicate more with the public
2. employ hi-tech means in research
3. feel no shame or their cause
4. strive to develop new cures

69. From the text we learn that Stephen Cooper is ____.

1. a well-known humanist
2. a medical practitioner
3. an enthusiast in animal rights
4. a supporter of animal research

70. According to the passage, the key to eliminating the obstacle to medical researches with animals is ____.

1. laying down relative laws and regulations
2. awakening people to the urgency of the researches with animals
3. making people understand medical researchers in some aspects
4. inviting people to perform the research with scientists together

(Reference keys.)