我国电网的频率标准是（） A.40Hz B.50Hz C.60Hz D.70Hz

椎动脉型颈椎病最突出的症状是（）。

A.恶心

B.猝倒

C.心慌

D.视物不清

E.耳鸣耳聋

怎样看木隔墙施工详图

Going back to school is a very exciting event for my two boys. It means getting new school bags and books, and seeing friends again after the summer holiday.

My oldest son, 9-year-old Salem, asked me several times where we would go to buy a backpack, while my other son, 6-year-old Abdullah, asked what school would be like this year.

For the last three years, school was a nightmare for many children and their parents as violence increased and there were more attacks on schools and teachers. As a result, many parents prevented their children from going to school. One of six children in this country did not attend primary school in 2009. Many kids who did attend school were accompanied by a parent for the entire day to make sure nothing happened to their children.

For poor families or those with large families, back to school can be an expensive time. The government gives some help to those living in poor neighborhoods, and school bags, note books and other items(商品) are given for free.

Most of the merchants who sell notebooks and pens now sell their products out on the street instead of in stores. They sit on the ground and lay their items on the ground or they have a small table to sell their goods.

The bags cost between $10 and $20, while clothes and shoes cost between $20 and $30. I found all the things I needed for my sons and even bought something for myself. I spent about $50 on each of them, including school uniforms.

At the end of the day, we returned to our home carrying many shopping bags filled with items that made my children happy and excited to go back to school. I just hope this school year will be a peaceful one.

小题1:The author’s children are ________ to go to school.

A．eager

B．afraid

C．unwilling

D．surprised小题2:The underlined word “nightmare” is the closest in meaning to ________.

A．fantasy

B．dream world

C．prison

D．terrible situation小题3:Many children are not going to school mainly because of ________.

A．the terrible education system

B．security problems and poverty

C．parents’ distrust in schools

D．the government’s inability小题4:As a parent, the author ________.

A．is unable to afford his kids’ schooling

B．is unwilling to send his kids to school

C．hopes his kids have a happy school life

D．complains school education costs too much小题5:Which of the following statement is NOT true?

A．Many parents prevented their children from going to school for great study pressure.

B．School bags, note books and other items(商品) are given to those living in poor neighborhoods for free.

C．The author spent about $100 for her two sons.

D．The items the author bought made her children happy and excited to go back to school.

谷胱甘肽过氧化物酶的重要组成成分是（）。

A.锌

B.铁

C.硒

D.铜

E.铬

骨折近端向后倾斜移位

A．股骨粗隆间骨折
B．股骨颈骨折
C．股骨髁上骨折
D．股骨上1/3骨折
E．股骨上中段骨折