北大2013年考博士英语真题及答案 ,u~\$Az6
Part Two: Structure and Written Expression20 hw~cS7
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. :*c@6;2@
21.The nuclear family __________ a self-contained, self-satisfying unit composed of father, mother and children. -@^SiI:C
A. refers to B. defines C. describes D. devotes to bmT J
22.Some polls show that roughly two-thirds of the general public believe that elderly Americans are________ by social isolation and loneliness. /_jApZz
A. reproached B. favored C. plagued D. reprehended )](8{}wo
23.In addition to bettering group and individual performance, cooperation ________ the quality of interpersonal relationship. O]{H2&k@
A. ascends B. compels C. enhances D. prefers to:hMd1T
24.In the past 50 years, there ________ a great increase in the amount of research _____on the human brain. Y>%A*|U%
A. was…did B. has been…to be done C. was…doing D. has been…done I X\&