Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
#4678
A
producing
B
having been produced
C
to be produced
D
produced
推荐题目
The American Foundation for the Blind has been trying to figure out how to make public libraries __________to blind readers .
#4700
A
acceptable
B
accessible
C
alternative
D
attractive
______ students up to 2, 000 , the school has built another laboratory．
#4643
A
As
B
For
C
with
D
Since
Let’s go to ______ cinema – that’ll take your mind off the problem for _____while.
#5040
A
the; the
B
the; a
C
a; the
D
a; a
. People always hate betting on football. __________ to our joy, our legal authority took action at length.
#4679
A
Ever
B
Little
C
Much
D
Even
I will never forget the day _______ I came to my university and the day ______ I spent in a new city.
#4966
A
when; which
B
which; when
C
what; that
D
on which; when