21．This is our contribution to world of the 21th century, world of independence and m——青夏教育精英家教网—

摘要：21．This is our contribution to world of the 21th century, world of independence and mutual understanding. A. the; / B. /; a C. a; the D. the; a

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This is our contribution to ________ world of the 21th century, _____ world of independence and mutual understanding.

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

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