问题
选择题
___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
A．As
B．Once
C．If
D．Although
答案
答案：D
本道题考查让步状语从句。一定要看懂：虽然地球表面覆盖着水，但是纯净水仍然很稀有和珍贵。选择D.
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___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
A．As
B．Once
C．If
D．Although
答案：D
本道题考查让步状语从句。一定要看懂：虽然地球表面覆盖着水，但是纯净水仍然很稀有和珍贵。选择D.