单项选择题
基建投入缴纳企业所得税后，作为建设单位的留成收入，其中（）用于组织和管理建设项目方面的开支。
A．20% B．70% C．10% D．60%
单项选择题 "Did you go to Belgium last year when you were on a business trip to Europe" "No,________there."
单项选择题 The main theme of the passage is________.
单项选择题 To drive his point home, the author________.
