2015英一(完整版)

2024年3月24日發(fā)(作者：關(guān)于熱愛(ài)的作文)

絕密★啟用前

2015年全國(guó)碩士研究生招生考試

英語(yǔ)（一）

（科目代碼：201）

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Section U of English

Ⅰ

Directions:

Read the following text. Choo the best word(s) for each numbered blank and mark A,

B, C or D on the ANSWER SHEET. (10 points)

Though not biologically related, friends are as

“

related

”

as fourth cousins, sharing

about 1% of genes. That is 　1　 a study, published from the University of California and

Yale University in the

Proceedings of the National Academy of Sciences

, has 　2　.

The study is a genome-wide analysis conducted 　3　 1,932 unique subjects which

　4　 pairs of unrelated friends and unrelated strangers. The same people were ud in

both 　5　.

While 1% may em 　6　, it is not so to a geneticist. As James Fowler, professor

of medical genetics at UC San Diego, says,

“

Most people do not even 　7　 their fourth

cousins but somehow manage to lect as friends the people who 　8　 our kin.

”

The study 　9　 found that the genes for smell were something shared in friends but

not genes for immunity. Why this similarity exists in smell genes is difficult to explain, for

now. 　10　, as the team suggests, it draws us to similar environments but there is more

　11　 it. There could be many mechanisms working together that 　12　 us in choosing

genetically similar friends 　13　

“

functional kinship

”

of being friends with 　14　!

One of the remarkable findings of the study was that the similar genes em to be

evolving 　15　 than other genes. Studying this could help 　16　 why human evolution

picked pace in the last 30,000 years, with social environment being a major 　17　 factor.

The findings do not simply explain people

’

s 　18　 to befriend tho of similar

　19　 backgrounds, say the rearchers. Though 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.

英語(yǔ)（一）試題第1頁(yè)（共14頁(yè)）