Mountain climbing ________ be very tiring, and many people feel sick ________ the atmosphere gets thinner.
#31554
A
may; while
B
can; as
C
must; though
D
should; for
推荐题目
________ the tower building，where you can see the whole city
#31201
A
Standing on the top of
B
If you climb to
C
When you reach the top of
D
Get to the top of
______ you are familiar with the author’s ideas, try reading all the sections as quickly as possible.
#32360
A
Now that
B
Ever since
C
In case
D
As long as
There is still much to discuss；________，we shall return to this topic at the next meeting.
#30470
A
yet
B
therefore
C
otherwise
D
however
I think it’s better to give it a second thought so many of us consider it a risk．
#30163
A
as
B
before
C
although
D
once