B. inhuman and unacceptable.

C. inevitable but vicious.

D. pointless and wasteful.

48. 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.

49. 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.

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.

解析：

步骤一， 中心统一原则

首段---主题句；其他段落---段落中间转折词所在句或段首句

首段： Hearing allegations of cruelty to animals in research settings, many are perplexed that anyone would deliberately harm an animal. 听说在实验场景中残忍的对待动物的宣传，许多人不禁感觉到迷惑，有人故意伤害动物。

其他段落：For example, a grandmotherly woman staffing an animal rights booth at a recent street fair was distributing a brochure that encouraged readers not to use anything that comes from or is tested in animals---no meat, no fur, no medicines.例如，一位祖母年龄状的老太太在最近的街边集市上摆了保护动物的摊子，向路人散发保护动物权利的小册子……

Scientists must communicate their message to the public in a compassionate, understandable way---in human term, not in the language of molecular biology.科学家必须与公众们沟通交流(以……的方式)。

Much can be done.很多事情能够被做。(能够采取措施)

总结：文章围绕着______主题展开。

步骤二，粗略定位原则

题干表达的含义；各个段落表达的含义

46. The author begins his article with Edmund Burke's words to_____.

作者用Edmund Burke'的话来开篇目的是什么？---定位于第____段

47. Misled people tend to think that using an animal in research is_____.

被误导的人倾向于认为在实验中使用动物是怎样的？---定位于第____段

48. The example of the grandmotherly woman is used to show the public's_____.

祖母年龄状的老太太的例子被用来表明什么？---定位于第____段

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

作者相信，在面对动物权利倡导者的挑战，科学家应该做些什么？---定位于第____段

50. From the text we learn that Stephen Cooper is_____.

通过文章我们得知Stephen Cooper是何许人也？---定位于第____段

步骤三，精确定位原则

方位论原则：

细节题重定位，重要、总结、定位词

推断题重主题，篇章、段落、主题句

结构题重关系，论据、论点、之联系

主旨题重范围，篇章、各段、主题句

识词题重方位，解释、逻辑、平行关系

46. The author begins his article with Edmund Burke's words to_____.

主旨题，文章各段主题句

47. Misled people tend to think that using an animal in research is_____.

细节题，定位词所在句

48. The example of the grandmotherly woman is used to show the public's_____.

结构题，例子对应的论点句

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