◎ 题干

Leaders of the BRIC countries-----Brazil, Russia, India and China----_______their second summit on Friday. President Hu Jintao then returned home to help direct relief work ______the deadly earthquake in Qinhai.
A.left, to followB.concluded, following
C.had left, followingD.had concluded, followed
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◎ 解析
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◎ 知识点
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