题目

完形填空。从A,B,C,D中选出一个最佳答案,使短文的意思完整     Once there was a rich man in a village .  He never gave anything to help others.  The  1   didn't like him . One day he said to them . “ I know you don't like me . I will give everything I have to you  2  I die. Then everyone will be happy. ”     But nobody believed him . The rich man couldn't  3  why they didn't believe him. One day he went for a  4  by the lake . Under a tree he happened to hear a pig and a cow  5 .     The pig said to the cow , “ why everybody likes you an17.在一定的温度下,向一密闭容器中放入 1mol A 和 1mol B,发生下列反应:A(g)+B(g)?C(g)+2D(g),达到平衡状态时,C的含量为 m%,保持温度和体积不变,若按照下列配比在上述容器放入起始物质,达到平衡状态时C的含量仍然为m%的是(  )A.2mol A+1mol BB.1mol C+1mol DC.2mol C+2mol DD.0.5mol A+0.5mol B+0.5mol C+1mol D
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