检查软件产品是否符合需求定义的过程称为( )。A．确认测试 B．集成测试 C．验

下列经济影响分析模型中，（）可以动态地模拟经济发展的演进趋势。

A．投入产出模型

B．动态系统计量模型

C．系统动力学模型

D．宏观经济递推优化模型

做匀速圆周运动的物体，下列说法中正确的是（　　）

A．物体的线速度不变

B．物体的加速度不变

C．物体做变速运动

D．物体所受合外力是恒力

阅读表达（共5小题；每小题2分，满分10分）

What is the hottest topic at your school recently? In Hangzhou Yongjin Middle School, it’s money.

The school held an activity called“making money”last weekend. About 200 Junior 1 and Junior 2 students

were divided into 30 teams. They went out                        . What did they choose to sell? Some

sold newspapers; some chose bottled water; some sold environmentally friendly shopping bags and bamboo

baskets.

Hu Qing’s team decided to sell some us useful books in front of the Children Activity Center. They thought

parents would like to buy the books for their children. But unfortunately, they met urban management officers.

The officers asked them to leave.“We played hide-and-seek with the offices for the whole morning,”said Hu.

“Finally we had to give up.”

Wang Bing and her team sold ice cream in a square. They didn’t meet any officers. But few people were

interested in what they were selling. The team then put up a board saying“For Country Kids”. It worked. More

people came to their stall(小摊). A foreigner even gave them 100 Yuan.“He didn’t want any change. He said he

wanted to help the children,” said Wang. “We were touched.”Later that day they gave the 100 Yuan and more

to the “Project Hope”office.

Meng Zhaoxiang and his team were luckier. They sold all their cakes in four hours, spending 39.5 Yuan and

getting back 80 Yuan. They made 40.5 Yuan. “It was not easy to make the money,”said Meng. “Some people

just looked. Others just tasted but didn’t buy. Now I know how hard it is for our parents to make money we need

to lead happy lives.”

小题1:What is the main idea of the text?(No more than ten words)

小题2:Fill in the blank in Paragraph 2 with proper words.(No more than ten words)

小题3:What does the underlined“it”in Paragraph 4 refer to?

小题4:What is the writer’s attitude towards the activity?

小题5:What is the purpose of holding the activity?(No more than twelve words)

创造的道路曲折而坎坷，这要求专业技术人员需要具有（）.

查看创建目录命令mkdir的帮助文档可以使用（）。

A、mkdir-h

B、manmkdir

C、helpmkdir

D、infomkdir