___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
#80429
A
As
B
Once
C
If
D
Although
推荐题目
The professor, _____ some of his assistants, _____ to attend our discussion this afternoon.
#32789
A
and; is
B
as well as; is
C
or; are
D
except for; are
A survey showed that _______ Chinese kungfu movies remain popular among foreign audiences, Chinese directors and actors still lack international recognition.
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A
when
B
while
C
as
D
since
The news _____ the spaceship succeeded in returning to the earth spread everywhere.
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A
that
B
which
C
whether
D
what
I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.
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A
and
B
but
C
nor
D
or