Science and technology have ____in important ways to the improvement of agricultural production.
#84134
A
attached
B
assisted
C
contributed
D
witnessed
推荐题目
Li Fang is always ready to help others when they are in trouble and he never their request.
#73345
A
turns up
B
turns over
C
turns in
D
turns down
Mary wanted to ______ her experiment, but her parents encouraged her to continue.
#69002
A
give up
B
give in
C
give out
D
give away
Iraq has ______ too many wars since 1990, making his people _______ a lot.
#66902
A
got through; pay
B
looked through; face
C
gone through; suffer
D
passed through; destroy
When you are in the lab, you should ___ teacher’s instructions.
#80433
A
follow
B
give
C
receive
D
listen