搜题请搜索小程序“爱下问搜题”
问题 选择题

某粒子的结构示意图为，则有关该粒子的下列说法正确的是[ ]

A.该粒子是阴离子

B.该元素的原子最外层有8个电子

C.该粒子带一个单位的正电荷

D.该元素的原子在化学反应中不易得到电子

答案

答案：A

阅读理解

阅读理解。

     It's nine o'clock in the evening. The family are at home. Jim's father is sitting in a chair. He's watching

TV. His mother is standing near the window. She's giving some food to Polly. Polly says, "Thanks! Thanks!"

Where's Jim? Oh, he's behind the door. Kate is looking for him. They are playing games. There is no

homework on Sunday evening.

1. There are _______ people in the family.

A. three

B. four

C. five

D. six

2. Who is watching TV in a chair?

A. Jim is

B. It's Jim

C. Jim's father is

D. It's Jim's father

3. Jim and Kate are _______.

A. good friends

B. two girls

C. two boys

D. brothers and sisters

4. The children _______ doing their homework.

A. aren't

B. isn't

C. don't

D. not

5. What's Kate doing?

A. She's doing her homework.

B. She's standing near the window.

C. She's looking for a pen.

D. She's playing games.

查看答案
多项选择题

企业信息系统的开发工作小组的开发人员有()

A．管理人员

B．程序设计人员

C．系统分析设计人员

D．最高层领导
查看答案