变配电所直流操作电源中，所谓“端电池”是指（）。 A.放在端头的电池 B.参与电压调

Iphones may be the most popular mobiles in the world now. Not only do adults use them, but little children also like them.

Natasha Shykes is a mother of two kids in America. When her daughter, Kelsey, was only two years old, she became interested in her father’s iphone. “She pressed the button (按钮) and the phone lit up. It seemed to be amazing for her,” said Natasha. “Then she got serious about the phone. She always cried for it. It seemed that she also wanted an iphone.”

Iphones are easy to use. So it is not difficult for little children to use them. Many applications (应用软件) on iphones are designed for children who are too young to go to school. For example, children can learn more about the animals in the world by watching the videos on the phones.

However, parents are very worried about this. They don’t know whether they should buy their children iphones or not. There are two main reasons. One is that they are afraid that children may destroy the iphones. Another reason is that they are not sure whether iphones can really be used as educational tools.

小题1:Natasha’s daughter felt very ___________ the iphone.

A. afraid of               B. surprised at            C. interested in   

小题2:The underlined words “lit up” mean “___________” in Chinese.

A. 点燃                B. 发出响声                 C. 点亮

小题3:The third paragraph mainly tells us__________.

A. iphones are difficult for adults to use.

B. Many children can’t use iphones because they are too young.

C. Parents can do many things on the iphones.

小题4:Parents are worried about the iphones because________.

A. their children may destroy the iphones.

B. Iphones are useless to their children’s study.

C. Iphones are bad for their children’s health.

小题5:What’s the best title for the passage?

A. An Interesting Tool      B. A Popular Mobile     C. A Colorful World

“道德价值导向”是社会道德价值体系的灵魂和“___________”。

材料、配件进场时应具备（）

A、技术文件

B、质量证明文件

C、审批文件

某生物正常体细胞的染色体数目为8条，下图表示含有一个染色体组的细胞是（）

A.

B.

C.

D.

华南实木的地热产品有（）。

A.铁苏木

B.柚木

C.印茄

D.孪叶苏木