已知一般情况下原子核外最外层电子数相等的元素具有相似的化学性

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已知一般情况下原子核外最外层电子数相等的元素具有相似的化学性质．氟元素原子的核外电子排布示意图为，下列原子中，与氟元素原子的化学性质相似的是[ ]

答案

答案：D

阅读理解

阅读理解。

I am Maya. I am 13 years old. I am from Africa (非洲). My father is a teacher and my mother works

in a hospital. They both like their work and work very hard.

I am studying in a middle school. And I like music and drawing best. I want to be a designer(设计师), I like to design my room. I like the color-pink, so there are a lot of' pink things in my room.

I have three friends in my room. They are Mike, Dora and Peter. They are my toys. I love them. Every night, they sleep on my bed with me.

1. What does Maya's mother do?

A. A teacher.

B. A doctor.

C. A farmer.

D, A designer.

2. What's Maya's favorite color?

A, Red.

B. Yellow.

C. Pink.

D, White.

3. What does Maya tell us in the second paragraph(段落) ?

A. What she likes.

B. Her room.

C. Pink things.

D, The things in her room.

4. What does Maya tell us in the third paragraph?

A. Mike.

B. Dora.

C. Peter.

D. Her friends.

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单项选择题 A3/A4型题

患儿，男，4岁，生后即被发现腭部裂开，检查见悬雍垂、软腭及部分硬腭裂开，牙槽嵴完整。

腭裂修复术后，语音功能恢复正常的必要条件是（）

A.软腭有动度

B.患者咽后壁上派氏嵴明显

C.患者牙列完整，咬合关系正常

D.悬雍垂的外形恢复正常

E.发音时能形成良好的腭咽闭合功能

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