Science and technology have __________ in important ways to the improvement of agricutural production.
#13548
A
attached
B
assisted
C
contributed
D
witnessed
推荐题目
He dived in the water and _____ to search for his girlfriend’s lost gold ring.
#11208
A
caught his breath
B
held his breath
C
lost his breath
D
took breath
.I want to buy a rope which is _____________this one.
#14384
A
twice as longer as
B
as twice long as
C
twice the length of
D
as twice as
Traditionally, local midwives would ________ all the babies in the area.
#12904
A
handle
B
produce
C
deliver
D
help
If parents have children help with housework, the children will feel needed. ______, they will learn to take care of themselves.
#13258
A
On the contrary
B
In a word
C
That is to say
D
What’s more
“Your homework is all right; , you can do it better, I think.” said the mother.
#10811
A
but
B
while
C
however
D
though