___ 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
Students should be encouraged to ______ their own opinions, ______ right or wrong.
#30814
A
present; whether
B
compare; no matter
C
announce; no matter
D
remark; whether
Mary is short__________ her brother is very tall.
#80321
A
still
B
nor
C
while
D
when