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 the ANSWER SHEET.

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 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 ……此处隐藏52917个字…… d! To be specific, in our daily life, it's not uncommon that on buses or subways, or walking on the road, we are all playing with mobile phones or ipads for recreation, even when we have dinner with our friends, parents or loved one.

    Evidently, we should take a rational attitude towards this issue. The media should promote the awareness of healthy lifestyle among the public. Meanwhile, social activities, either in communities or on campus, should be launched so that people can get back to the real world. Joint efforts are needed to ensure people to have face-to-face communication! I believe a harmonious relationship will be set between friends if we set aside our mobile phones!