问题 选择题
如图所示,AB是一质量为m的均匀细直杆,A端靠在光滑的竖直墙壁上,B端置于水平地面上,杆身与竖直方向夹角为θ,杆与地面的摩擦系数为μ,保持平衡,则此时杆与地面的摩擦力为(  )

A.mgtgθ

B.mgsinθ

C.μmg

D.μmg

答案

答案:A

阅读理解

任务型阅读。

     With more and more farmers coming to work in cities, their children follow them.

     However, problems appear. One of these problems is that it is difiicult for these children to get

education in cities.

     Luckily, there are some free schools for them, but they are not enough. Ten-year-old Li Xin is

one of the lucky girls who get a chance to study in one of these schools. Although she has to spend

about two hours and change buses twice, she is very happy. As a child from a migrant worker's

(外来务工人员) family in the city, finally she has been given the chance to study.__1__, these free

schools are their best choice, because they can have free classes, textbooks, uniforms and meals in

the school for two years.

     But there is a long way to go, __2__, because running a school is not easy and needs lots of money.

A school officer said they needed at least one million yuan to run the school.

     "Luckily, some people and companies donate money, used books and a lot more other things to

help us. Also some people work as teachers for free." He added.

     In one word, both the government and the people keep improving the whole country's education

either in countries or in cities. Don't you think the children nowadays are luckier than their parents

were? Anyhow, we must try to give them an equal chance to get better education so that we can

make our society a harmonious (和谐) one.

A) 从A,B,C三项选项中,选出两个适当选项并将其字母标号分别填入短文1,2的空白处。

A. Many children like Li Xin don't have the chance to go to school

B. The flee schools for children from migrant worker's families are not enough

C. For children like Li Xin who don't have enough money for school

B) 根据短文内容回答下列问题

3. What does the underlined word "run" mean in Chinese in the passage?

_______________________________________________________

4. What do people and companies donate to help the school?

_______________________________________________________

C) 将文中斜体部分译成汉语

5. _____________________________________________________

单项选择题