问题 解答题

某地的一种绿色蔬菜,在市场上若直接销售,每吨利润为1000元,经粗加工后销售,每吨利润4000元,经精加工后销售,每吨利润7000元.当地一家公司现有这种蔬菜140吨,该公司加工厂的生产能力是:如果对蔬菜进行粗加工,每天可加工16吨,如果对蔬菜进行精加工,每天可加工6吨,但每天两种方式不能同时进行.受季节等条件的限制,必须用15天时间将这批蔬菜全部销售或加工完毕.为此,公司研制了三种方案:

方案一:将蔬菜全部进行粗加工;

方案二:尽可能地对蔬菜进行精加工,没来得及加工的蔬菜,在市场上直接出售;

方案三:将一部分蔬菜进行精加工,其余蔬菜进行粗加工,并刚好15天完成.

如果你是公司经理,你会选择哪一种方案,说说理由.

答案

解:方案一:4000×140=560000(元);

方案二:156×7000+(140﹣15×6)×1000=680000(元);

方案三:设精加工x吨,则

解得:x=60,7000×60+4000×(140﹣60)=740000(元);

答:选择第三种.

阅读理解

阅读理解。

     It's Jimmy's birthday and he is 9 years old. He gets a lot of presents from his family and

one of them is a big drum( 鼓 ). His grandfather buys it for him.

     Jimmy likes it very much. He plays with it every day and he often makes a terrible noise

(可怕的声音). His father works in the day and Jimmy is in bed when he gets home in the

evening. So his father doesn't hear the noise.

     But Mrs. Black doesn't like the noise, so one morning she takes a sharp knife and goes

to Jimmy's room when he hits his drum. She says to him, "Hello! Jimmy. Do you know there

is something very nice in your drum? Here is a knife. Please open the drum and let's find it."

1.What does Jimmy get on his birthday?

A. He gets only one present from his family.    

B. He gets a lot of presents.    

C. He gets a knife and a drum.    

D. He gets a drum from Mrs Black.

2.Who gives Jimmy a drum?  

A. His mother buys it for him.          

B. His father buys it for him.

C. His father's friend buys it for him.    

D. His grandfather buys it for him.

3.When his father gets home in the evening, what does Jimmy do?

A. He hits his drum with his grandfather.  

B. He watches TV with Mrs Black.  

C. He sleeps in bed.  

D. He does his homework with his grandfather.

4.What's the Chinese meaning of "hits" in this passage?

A. 敲击            

B. 拿着  

C. 知道        

D. 看见

5.Mrs. Black gives Jimmy a knife because_____.

A. she likes Jimmy's drum

B. she knows there is something in the drum

C. she doesn't like the noise                  

D. she wants to know what is in the drum

问答题 简答题