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Chinese President Hu Jintao called for an immediate cease-fire in Libya ______ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan province.

A.to prevent
# ]1 C) @) _+ j8 @5 Y
B.to have prevented2 f, Q% ^2 \9 _! W& i C.preventing$ \ Q; P& b6 b0 A: X$ d% ? D.having prevented$ C" e- I' g; K# W0 f) J

答案A

解析