销售与收款业务循环中，用来表示由于销售退回或经批准折让而引起的应收账款减少的凭证是：
A．销货合同
B．销货单
C．贷项通知单
D．客户订货单
参考答案：C
—Why don't we hold a party to celebrate the achievements gained by our players?
—________[ ]
A. Because we haven't got enough preparations.
B. Good idea!
C. It's all because of the terrible weather.
D. Not all would like to attend it.
2008年7月9日，八国集团与中国、印度、巴西、南非和墨西哥5个发展中国家领导人对话会议在目本举行。会议主要讨论了世界经济、千年发展目标和（）.
A.粮食安全议题
B.反恐议题
C.和平利用太空议题
D.环境保护议题
