问题
选择题
A great deal of science and technique has been______since China carried out reform and open policy.
A．brought down
B．brought in
C．brought out
D．brought up
答案
答案：B
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”。