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    If you want to study nature of universe, at first you must be clear about the origin of it. A. 不填, the B. the, 不填 C. the, the D. 不填, 不填 【查看更多】

     

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    If you want to study __ nature of __ universe, at first you must be clear about the origin of it.（ ）

    A. /; the　　　　　 B. the; /　　　　　 C. the; the　　　　 D. /; /

     

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