Science and technology have in important ways contributed to the improvement of agricultural production. 
#72378
A
contributed to
B
resulted from
C
carried off
D
handed over
推荐题目
Every minute is made full      of      our lessons well.
#69016
A
to use, study
B
use, studying
C
use, to study
D
used, studying
People who have _______ flood often say that’s _______ . 
#68929
A
experienced; terrifying experience
B
experimented; terrifying experience
C
experienced; a terrifying experience
D
experimented; a terrifying experience