问题 问答题

某施工队2006年3~9月份成本核算资料如下表所示。如果2006年10月份和11月份预算成本分别为20万元和30万元,请分别预测10月、11月的实际成本。

某施工队成本核算资料表 单位:万元

答案

参考答案:

建立一元回归方程

y=a+6x

根据上表资料代人公式计算d和6:

因此,回归方程为了=9+0.6X

如果本年10月预算成本为20万元,即X=20

则实际成Y10=9+0.6×20=21(万元)

实际成本比预算成本将超支1万元

如果本年11月预算成本为30万元,即X=30

则实际成本Y11=9+0.6×30=27(万元)

实际成本比预算成本将降低3万元。

阅读理解

Jamie was born in a small village in the north of England. He is nine years old. He likes playing basketball very much. When he is free, he always plays basketball with his friends in the open air. Sometimes he walks in the forest and picks some flowers by himself.

Last Friday, Jamie finished his homework after the second class in the morning. He hurried to play basketball. The playground was wet. After some time his basketball was dirty and his hands were dirty, too. It was 9: 45 and the third class began. Jamie had no time to wash his hands and ran into his classroom. Mr Black, his English teacher, told Jamie to write some new words on the blackboard. Jamie stood in front of the blackboard and started to write. Mr Black saw his right hand was dirty.

"Oh, dear!" said the teacher. "Your right hand is dirty. I'm sure it's the dirtiest in our class."

"You are wrong, Mr Black," said Jamie. Then he showed his left hand and it was dirtier.

小题1:From the first paragraph (段) we know Jamie __________.

A.was born in 2003

B.likes playing football

C.doesn't like flowers

D.lives in the south of England小题2:When did Jamie play basketball last Friday?

A.After the first class.

B.After the third class.

C.Between the first class and the second class.

D.Between the second class and the third class.小题3:Jamie's hands were dirty last Friday because           .

A.the playground was wet

B.he picked flowers in the morning

C.he has no habit of washing his hands

D.there was no water to wash his hands小题4:Mr Black asked Jamie to           .

A.wash his hands

B.write some words

C.show his right hand

D.show his left hand小题5:What's the best title (题目) for the passage?

A.Where are you from?

B.Can you play basketball?

C.You are wrong

D.I'm sorry

单项选择题