问题补充:
A great deal of science and technique has beensince China carried out reform and open policy.
A. brought down
B. brought in
C. brought out
D. brought up
答案:
A. brought down
(答案→)B. brought in
C. brought out
D. brought up
解析:考查短语动词。bring in“引进”,符合语境;bring out“说明,出版,发挥”; bring down“使落下,降低”; bring up“抚养长大,呕吐”。