2.大扫除后,小华和爸爸妈妈玩起了游戏。他们把大扫除中找到的火柴棒摆成下面的图形,要求移动3根火柴棒,使它变成只有3个同样大小的正方形。请你也来试一试,并画出来。

答案
移动方法:
1. 取出原2×2排布的4个小正方形中任意1个小正方形的3条边的火柴,共3根。
2. 将这3根火柴移动到图形空白区域,和该小正方形剩余的1条边的火柴拼接成1个和原小正方形大小相同的全新独立小正方形。
此时原图形剩余部分保留2个完整的等大小小正方形,加上新拼接的1个小正方形,总共得到3个大小完全相同的小正方形,仅移动了3根火柴,符合题目要求。
答:按上述方法移动3根火柴,即可得到3个互不共用边、同样大小的正方形。
1. 取出原2×2排布的4个小正方形中任意1个小正方形的3条边的火柴,共3根。
2. 将这3根火柴移动到图形空白区域,和该小正方形剩余的1条边的火柴拼接成1个和原小正方形大小相同的全新独立小正方形。
此时原图形剩余部分保留2个完整的等大小小正方形,加上新拼接的1个小正方形,总共得到3个大小完全相同的小正方形,仅移动了3根火柴,符合题目要求。
答:按上述方法移动3根火柴,即可得到3个互不共用边、同样大小的正方形。
三、让我们来看看鲍勃的房间吧!将合适的词填在横线上。
This
1.
5.
This
is
1 Bob's room. The window is big, and the wall is white. There is a
2 picture on the wall. There is a desk in
3 front of
4 Bob. The desk is very big. There are
5 three pencils and a
6 cup of tea on the desk. Under the desk, there is a football. Are there any curtains(窗帘) in
7 the room? Yes, there
8 are. Bob's room is clean and bright(明亮的).1.
is
2. a
3. in
4. of
5.
are
6. a
7. in
8. there
答案
1. is 2. a 3. in 4. of 5. are 6. a 7. in 8. there
四、小丽有一个幸福的家,她写了一篇小作文来介绍自己的家庭。让我们来读一下并判断下列句子的正(T)误(F)。
I have a happy family. There are five people in my family. My grandpa and my grandma are very old. They like watching TV very much. My father is a doctor. My mother is a nurse. They work hard. I
am a student in Grade Three. I love my family!
(
(
(
(
(
I have a happy family. There are five people in my family. My grandpa and my grandma are very old. They like watching TV very much. My father is a doctor. My mother is a nurse. They work hard. I
am a student in Grade Three. I love my family!
(
F
)1. There are three people in my family.(
F
)2. My father is a teacher.(
F
)3. My mother is a doctor.(
T
)4. My grandpa likes watching TV.(
T
)5. I'm a student in Grade Three.答案
1.F 2.F 3.F 4.T 5.T
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