跨考整理：2015考研英語一真題及答案

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2015研究生入學統(tǒng)一考試試題(英語一)

Section 1 Use of English

　　Directions:Readthe following text. Choose the best word(s) for each numbered blank andmark [A], [B], [C] or [D] on ANSWER SHEET 1. (10 points)

Though notbiologically related, friends are as "related" as fourth cousins,sharing about 1% of genes. That is   1   a study published from theUniversity of California and Yale University in the Proceedings of the NationalAcademy of Sciences, has   2  .

The study is agenome-wide analysis conducted   3   1932 unique subjects which   4   pairs ofunrelated friends and unrelated strangers. The same people were used in both   5  .

While 1% may seem    6   , it is not so to a geneticist. As co-author of thestudy James Fowler, professor of medical genetics at UC San Diego says,"Most people do not even    7    their fourth cousins but somehow manage toselect as friends the people who    8    our kin."

The team alsodeveloped a "friendship score" which can predict who will be yourfriend based on their genes.

The study    9    found thatthe genes for smell were something shared in friends but not genes forimmunity. Why this similarity in olfactory genes is difficult to explain, for now.    10   , as the team suggests, it draws us to similar environments butthere is more    11    it. There could be many mechanisms working intandem that    12    us in choosing genetically similar friends    13    than"functional kinship" of being friends with    14   !

One of the remarkablefindings of the study was that the similar genes seem to be evolving    15    than othergenes. Studying this could help    16    why human evolution picked pace in the last30,000 years, with social environment being a major    17    factor.

The findings do notsimply corroborate people's    18    to befriend those of similar    19    backgrounds,say the researchers. Though all the subjects were drawn from a population ofEuropean extraction, care was taken to    20    that all subjects, friends and strangers weretaken from the same population. The team also controlled the data to checkancestry of subjects.

1     A what                  B why                   C how                   D when

2     A defended            B concluded           C withdrawn          D advised

3     A for                     B with                   C by                     D on

4     A separated            B sought                C compared           D connected

5     A tests                   B objects               C samples              D examples

6     A insignificant       B unexpected         C unreliable           D incredible

7     A visit                   B miss                   C know                 D seek

8     A surpass               B influence            C favor                 D resemble

9     A again                 B also                   C instead               D thus

10    A Meanwhile         B Furthermore       C Likewise            D Perhaps

11    A about                 B to                      C from                  D like

12    A limit                  B observe              C confuse              D drive

13    A according to       B rather than          C regardless of       D along with

14    A chances              B responses            C benefits              D missions

15    A faster                 B slower                C later                   D earlier

16    A forecast              B remember           C express               D understand

17    A unpredicted        B contributory       C controllable        D disruptive

18    A tendency            B decision             C arrangement       D endeavor

19    A political             B religious             C ethnic                D economic

20    A see                     B show                  C prove                 D tell

　　答案：

　　1、A what

　　2、B concluded

　　3、D on

　　4、C compared

　　5、C samples

　　6、A insignificant

　　7、C know

　　8、D resemble

　　9、B also

　　10、D Perhaps

　　11、B to

　　12、D drive

　　13、B rather than

　　14、C benefits

　　15、A faster

　　16、D understand

　　17、B contributory

　　18、A tendency

　　19、C ethnic

　　20、A see