1 / 12
文档名称:

考研英语一真题及答案.doc

格式:doc   大小:342KB   页数:12页
下载后只包含 1 个 DOC 格式的文档,没有任何的图纸或源代码,查看文件列表

如果您已付费下载过本站文档,您可以点这里二次下载

分享

预览

考研英语一真题及答案.doc

上传人:相惜 2021/10/21 文件大小:342 KB

下载得到文件列表

考研英语一真题及答案.doc

相关文档

文档介绍

文档介绍:编辑版word
页脚下载后可删除,如有侵权请告知删除!
编辑版word
2015年全国硕士研究生入学统一考试
英语(一)试题
Section I   Use of English
Directions:
Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points)
①Though not biologically related, friends are as “related” as fourth cousins, sharing about 1% of genes. ②That is 1 a study, published from the University of California and Yale University in the Proceedings of the National Academy of Sciences, has 2 .
①The study is a genome-wide analysis conducted 3 1,932 unique subjects which 4 pairs of unrelated friends and unrelated strangers. ②The same people were used in both 5 .
①While 1% may seem 6 , it is not so to a geneticist. ②As James Fowler, professor of medical genetics at UC San Diego, says, “Most people do not even 7 their fourth cousins but somehow manage to select as friends the people who 8 our kin.”
  ①The study 9 found that the genes for smell were something shared in friends but not genes for immunity. ②Why this similarity exists in smell genes is difficult to explain, for now. ③ 10 , as the team suggests, it draws us to similar environments but there is more 11 it. ④There could be many mechanisms working together that 12 us in choosing genetically similar friends 13 “functional kinship” of being friends with 14 !
  ①One of the remarkable findings of the study was that the similar genes seem to be evolving 15 than other genes. ②Studying this could help 16 why human evolution picked pace in the last 30,000 years, with social environment being a major 17 factor.
①The findings do not simply explain people’s 18 to befriend those of similar 19 backgrounds, say the researchers. ②Though all the subjects were drawn from a population of European extraction, care was taken to 20 that all subjects, friends and strangers were taken from the same population. ③The team als