北大2013年考博士英语真题及答案 lNYt`xp
Part Two: Structure and Written Expression20
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Directions: In each question decide which of four choices given will most suitably complete the sentence if inserted at the place marked. Mark your choices on the ANSWERSHEET. ?Wlb3;
21.The nuclear family __________ a self-contained, self-satisfying unit composed of father, mother and children. ~UP[A'9jJ
A. refers to B. defines C. describes D. devotes to \XZ/v*d0
22.Some polls show that roughly two-thirds of the general public believe that elderly Americans are________ by social isolation and loneliness. ``hf=
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A. reproached B. favored C. plagued D. reprehended + R~'7*EI
23.In addition to bettering group and individual performance, cooperation ________ the quality of interpersonal relationship. Li4zTR|U
A. ascends B. compels C. enhances D. prefers {
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24.In the past 50 years, there ________ a great increase in the amount of research _____on the human brain. ]>5/PD,wWy
A. was…did B. has been…to be done C. was…doing D. has been…done H&