标签：职称英语考试真题,职称英语考试答案, 2010职称英语考试真题综合类A级试题及答案-阅读理解,
第4部分：阅读理解(第31～45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每道题确定一个最佳选项。
第一篇
Endangered Species
Endangered species are plants and animals that are in immediate danger of extinction. Extinction is actually a normal process in the course of evolution. Since the formation of the earth, many more species have become extinct than， 大小：1.29 MB