【正确答案】 D

【答案解析】[解析] 89-91
And to close tonight's broadcast we have this item from the central part of the country. Scientists of Granville community college made yet another discovery of bones and other animal fossils from the last ice age. The scientists uncovered the bones when they were digging near the site of a similar find made just last year. Besides being of scientific interest. these discoveries are expected to help the local economy as they attract researchers and tourists to the area The nearby community of center city also expects to see lots of new job openings because of the plans to build the new museum near the discovery site.
初级问题
对于询问说话者身份的问题，只要稍稍留意这段话中出现的一些核心单词就可以很快找到答案。tonight's broadcast是决定性的线索，说话者是在播报新闻，所以可以知道正确答案是newscaster.

【正确答案】 B

【答案解析】中级问题
文章前半部分内容说的是科学家发现了古代动物的骨头和化石，接着又提到了这一发现给附近地区带来的影响，所以本段话的主题是科学发现。

【正确答案】 A

【答案解析】高级问题
题目中的job openings(职位)和选项中的employment(雇佣)的意思是相联系的，这一点非常重要。假如错过了提到job opening的部分，通过后面because以后的内容plans to build the new museum(计划修建新的博物馆)也可以推断出答案。