A great deal of science and technique has beensince China carried out reform and open poli

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”。