题目内容
It is known that water is not ___ endless resource , nor ____ that can be made once more.
A. the;/ B. an; one C. an ;that D. /;one
B
解析:
略
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题目内容
It is known that water is not ___ endless resource , nor ____ that can be made once more.
A. the;/ B. an; one C. an ;that D. /;one
B
略