通常以货币或货币交换的形式表现的成本为
A.直接成本B.无形成本C.机会成本D.边际成本E.有形成本
参考答案:A
看图填词,这是一张请假条,请根据图示,在空格处填入适当的词,使其意思完整、正确。
Dear Miss Wise,
I'm sorry that I can't go to school today. I had an accident and my 1_____ arm is hurt. This morning
I got up at 2_____ past six. While I was putting on my. 3_____, I found it was 4_____ outside. After I had
breakfast, I rode to school. At the crossing near the 5_____ before I turned 6_____, I looked 7_____ and
found there was 8_____ traffic behind me. But just then a 9_____. was running very fast towards me. I tried
to stop but there was water on the street. So I 10_____ on the road and hurt my arm. The man on the other
bike sent me to the hospital nearby. The doctor told me to rest for a month. So I have to ask for a month's
leave. Thanks.
Yours sincerely,
Mike
饮用绿茶能保护大脑。