正方体的棱长扩大3倍，体积就扩大______倍，表面积扩大______倍．

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问题填空题

答案

一个正方体棱长扩大3倍，则体积扩大，3×3×3=27倍，表面积扩大3×3=9倍．

故答案为：27；9．

阅读理解

读短文，选择正确的答案。

Hi, I'm Fangfang. This is my room. It is clean and nice. Look! My bed is big. The pictures are beautiful.

They are on the wall. You can see many books. They are on the shelf. I have a new doll. It's on the bed. Where

are my keys? They are in the door. I like my room.

1. Is the room clean and nice?[ ]

A. Yes, it is.

B. Yes, they are.

2. Is the bed small?[ ]

A. Yes, it is.

B. No, it isn't.

3. Where's the doll?[ ]

A. On the wall.

B. On the bed.

4. Are the books on the desk? [ ]

A. Yes, they are.

B. No, they aren't.

5. Does Fangfang like her room?[ ]

A. Yes, she does.

B. Yes, he does.

填空题

某种天气现象停歇时间超过一分钟，又继续出现时，只在开始记（），其后只记现象（）时间。