听力原文：W: I think the last question is very difficult.
M: Lot's go and ask Mr. Green.
Who are they going to ask about the question？
A. Their teacher.
B. Their father.
C. Mr. Green.
查看答案
A．person computersB．personal countingC．person circumstanceD．personal computers
A. person computers
B. personal counting
C. person circumstance
D. personal computers
A．开发阶段B．计划阶段C．分析阶段D．设计阶段
A. 开发阶段
B. 计划阶段
C. 分析阶段
D. 设计阶段
影子工资的主要组成部分是()。
A. 国民经济费用
B. 人工的社会耗费
C. 劳动力的机会成本
D. 人工个人消费水平
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