某企业计划全年采购电视机20000台，平均每次的订购费用为10元，_爱下问搜题

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问题单项选择题

某企业计划全年采购电视机20000台，平均每次的订购费用为10元，货物单价为4000元，保管费用率为1%，则最佳订购批量为( )。

A．80台

B．90台

C．100台

D．120台

答案

参考答案：C

选择题

破坏或改变野生生物栖息地和过度利用生物资源的最主要原因是（　　）

A．环境污染

B．人口的快速增长

C．生物资源的开发与利用

D．森林的过量开采

补全对话，情景问答

根据对话情景选择恰当的选项，其中有两项是多余的。

A. So what do you like best?
B. but every time they had sold out.
C. She bought a ticket.
D. It's very moving and popular.
E. Because she didn't get the ticket to The Sound of Music.
F. No, I don't. It's very boring.
G. Because she was ill.

Jeff: What's wrong with Miss Wang? She looks a little upset.
Tim:  1_____ She went to the theater three times this week,  2_____ I think she really wants to see it.
Alex: I hope she can see the movie next week. It's my favorite movie, too. 3_____
Betty: I prefer Gone with the Wind. It's so colorful and interesting. Jeff, do you like Beijing Opera?
Jeff: 4_____  But some of my friends like it a lot. It's full of famous stories and beautiful facial paintings.
Alex: 5_____
Jeff:  I like Tom and Jerry best. It's so funny.