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 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 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 genetically 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 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 those of similar    19    backgrounds, say the researchers. 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.

 
1. [A] when             [B] why         [C] how         [D] what
2. [A] defended         [B] concluded     [C] withdrawn     [D] advised
3. [A] for             [B] with         [C] on             [D] by
4. [A] compared         [B] sought         [C] separated     [D] connected
5. [A] tests             [B] objects         [C]samples         [D] examples
6. [A] insignificant     [B] unexpected     [C]unbelievable     [D] incredible
7. [A] visit             [B] miss         [C] seek         [D] know
8. [A] resemble        [B] influence     [C] favor         [D] surpass
9. [A] again             [B] also             [C] instead         [D] thus
10. [A] Meanwhile     [B] Furthermore     [C] Likewise     [D] Perhaps
11. [A] about         [B] to             [C]from         [D]like
12. [A] drive         [B] observe         [C] confuse         [D]limit
13. [A] according to     [B] rather than     [C] regardless of     [D] along with
14. [A] chances         [B]responses     [C]missions         [D]benefits
15. [A] later             [B]slower         [C] faster         [D] earlier
16. [A]forecast         [B]remember     [C]understand     [D]express
17. [A] unpredictable    [B]contributory     [C] controllable     [D] disruptive
18. [A] endeavor         [B]decision         [C]arrangement     [D] tendency
19. [A] political         [B] religious     [C] ethnic         [D] economic
20. [A] see             [B] show         [C] prove         [D] tell
1.    D    2.    B    3.    C    4.    A    5.    C
6.    A    7.    D    8.    A    9.    B    10.    D
11.    B    12.    A    13.    B    14.    D    15.    C
16. A    17.    B    18.    D    19.    C    20.    A
 
2015年考研英语（二）Cloze Test
Directions:
Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points)
In our contemporary culture, the prospect of communicating with -- or even looking at -- a stranger is virtually unbearable. Everyone around us seems to agree by the way they fiddle with their phones, even without a   1   underground.
It's a sad reality -- our desire to avoid interacting with other human beings -- because there's   2   to be gained from talking to the stranger standing by you. But you wouldn't know it,   3   into your phone. This universal armor sends the    4    : "Please don't approach me."
What is it that makes us feel we need to hide    5    our screens?
One answer is fear, according to Jon Wortmann, executive mental coach. We fear rejection, or that our innocent social advances will be    6   as "creepy,". We fear we'll be   7   . We fear we'll be disruptive. Strangers are inherently   8   to us, so we are more likely to feel   9   when communicating with them compared with our friends and acquaintances. To avoid this anxiety, we   10   to our phones. "Phones become our security blanket," Wortmann says. "They are our happy glasses that protect us from what we perceive is going to be more   11  .”
But once we rip off the bandaid, tuck our smartphones in our pockets and look up, it doesn't   12   so bad. In one 2011 experiment, behavioral scientists Nicholas Epley and Juliana Schroeder asked commuters to do the unthinkable:   Start a   13  . They had Chicago train commuters talk to their fellow   14   . "When Dr. Epley and Ms. Schroeder asked other people in the same train station to   15   how they would feel after talking to a stranger, the commuters thought their   16   would be more pleasant if they sat on their own," the New York Times summarizes. Though the participants didn't expect a positive experience, after they   17   with the experiment, "not a single person reported having been snubbed."
  18  , these commutes were reportedly more enjoyable compared with those sans communication, which makes absolute sense,  19   human beings thrive off of social connections. It's that   20   : Talking to strangers can make you feel connected.
 
1. [A] ticket         [B] permit         [C] signal         [D] record
2. [A] nothing         [B] link         [C] another         [D] much
3. [A] beaten         [B] guided        [C] plugged     [D] brought