A、 She engaged in field research on environmental protection.
B、 She helped families to move away from industrial polluters.
C、 She taught chemistry and microbiology courses in a college.
D、 She gave lectures on how to become a public speaker.

【正确答案】 A

【答案解析】解析：选项讨论了女士的工作。听力段落一开始谈到，作为工作的一部分，她需要调查环境中的有毒物质。所以答案选A)。

A、 The job restricted her from revealing her findings.
B、 She was offered a better job in a minority community.
C、 The job posed a potential threat to her health.
D、 She found the working conditions frustrating.

【正确答案】 A

【答案解析】解析：根据选项考生可以推测此问题可能是她换工作的原因。接下来，听力中讲她无法公开自己的调查信息，因为这些限制，1981她辞职了。选项A用 restrict sb. from doing sth. 的结构来表示她受到的限制。

A、 More branches of her company have been set up.
B、 Many toxic sites in America have been cleared up.
C、 More environmental organizations have appeared.
D、 Some giant industrial polluters have gone out of business.

【正确答案】 B

【答案解析】解析：建立在前面两题的基础上，可以判断此题的问题可能是她的努力带来的结果。听力接下来说，因为她的努力，国家范围很多含毒质高的厂址被清除了。同义重复，所以B)为正确答案。

A、 Her rigorous training in delivering eloquent speeches.
B、 Her lifelong commitments to domestic and global issues.
C、 Her widespread influence among members of Congress.
D、 Her ability to communicate through public speaking.

【正确答案】 D

【答案解析】解析：选项是对这位女士的讨论。听力中谈到她成功的原因，一是她接受的科学教育，一是她为环境问题的献身精神，同样重要的是通过公共演讲她与人们交流的能力。根据这些细节，可以判断D)为正确答案。