2015年考研英语一真题及答案.docx

Section I Use of EnglishDirections:Read the following text. Choose the best word(s) for each numbered blank andmark A, B, C or D on 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 ofCalifornia and Yale University in the Proceedings of the National Academy of Sciences,has__(2) 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 usedin both_(5) 1% may seem_(6)_,it is not so to a icist. As James Fowler, professorof medical ics at UC San Diego, says, “Most people do not even _(7)_their fourthcousins but somehow manage to select as friends the people who_(8)_our kin.”The study_(9)_found that the genes for smell were something shared in friendsbut not genes for immunity .Why this similarity exists in smell genes is difficultto explain, for now,_(10)_,as the team suggests, it draws us to similar environmentsbut there is more_(11)_it. There could be many mechanisms working together that_(12)_us in choosing ically similar friends_(13)_”functional Kinship” ofbeing friends with_(14)_!One of the remarkable findings of the study was the similar genes seem to beevolution_(15)_than other genes Studying this could help_(16)_why human evolutionpicked pace in the last 30,000 years, with social environment being amajor_(17) findings do not simply explain people’s_(18)_to befriend those ofsimilar_(19)_backgrounds, say the researchers. Though all the subjects were drawnfrom a population of European extraction, care was taken to_(20)_that all subjects,friends and strangers, were taken from the same . [A] when [B] why [C] how [D] what【答案】[D] what【解析】该题考查的是语法知识。根据句子结构和选项的特点,可以判断出空格处应填从属连词引导从句;再根据句子的内容,可以看出该从句是一项研究的相关内容(what),不是指研究的时间(when), 原因(why)和方式(how),因此,该题的答案为 what。2. [A] defended [B] concluded [C] withdrawn [D] advise