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    1．It is known that water is not an endless resource. can it be made once more.so we should save and protect it. A．so B．as C．thus D．nor 解析:选D.考查连词.根据“水既不是一种无穷无尽的资源.也不能被再制造 和nor位于句首.句子用部分倒装.可知选D. 【查看更多】

     

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    It is known that water is not an endless resource，________can it be made once more，so we should save and protect it.

    A. so 　　　　　　 B. as 　　　　　 C. thus 　　　　 D. nor

     

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