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
 She         to beat the world record but failed at last.
#69400
A
succeeded
B
attempted
C
advised
D
offered
Once he makes a promise, he will ______ it.
#81422
A
insist on
B
carry out
C
keep
D
stick to
 _____ are written _____ English.
#81461
A
Many a books; in  
B
Many of the books; with
C
Many of the books; in
D
Many the books; with
He_____ some German while he was away on a business trip in Berlin.
#82764
A
picked out
B
picked up
C
gave up
D
gave out