编制科目汇总表直接依据的凭证是( )。
A．原始凭证
B．汇总原始凭证
C．记账凭证
D．汇总记账凭证
参考答案：C
小题1:If you want to learn something about computers, you may send e-mails to _____.
A．zhaoweiping@sohu.com
B．wudong@yahoo.com
C．tomsmith@163.com
D．lwh988@263.com小题2:A five-year-old boy has something wrong with his teeth. He should go to see _____.
A．Mr. Zhao
B．Mr. Wu
C．Mr. Smith.
D．Mr. Li
请完成下面生态系统结构和功能的概念图。
①（）
