精选优质文档-倾情为你奉上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
