文档介绍：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 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 used in both_(5)_.
While 1% may seem_(6)_,it is not so to a icist. As James Fowler, professor of medical ics 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.”
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 ically similar friends_(13)_”functional Kinship” of being friends with_(14)_!
One of the remarkable findings of the study was  the similar genes seem to be evolution_(15)_than other genes  Studying