问题 填空题

一个等腰三角形有两边分别为5cm和8cm,则周长是          厘米.

答案

18或21

本题考查了等腰三角形的性质和三角形的三边关系

题目给出等腰三角形有两条边长为5cm和8cm,而没有明确腰、底分别是多少,所以要进行讨论,还要应用三角形的三边关系验证能否组成三角形.

∵等腰三角形两边为5和8厘米

∴等腰三角形三边可能为5,5,8或5,8,8

∴周长可能为18或21厘米.

阅读理解

阅读理解。

     Tom lived in a town near New York. His father had a shop there and his mother was a doctor. He

was seven years old this year and began to go to school this September. It was a little far(远的) from

their shop and his father drove a car to take him to school five days a week. So he was never(从不)

late for class and his teachers likes him very much.

     It was Monday that day. Miss Green was teaching them to count(数数) from one to ten in the

morning. Tom was studying hard. Soon he could count them. Green was happy and asked, "How

many people are there in your family, Tom?"

     Tom stood up and said, "Two, Miss."

     "Who are they?"

     "My father and my mother."

     "Oh," Miss Green was surprised. She then said, "There’re three people in your family."

     "But now I’m not at home. I’m at school, you know!”

1. Where did Tom’s father work? _______.

A. In a factory.

B. In a school.

C. In a shop.

D. In a hospital.

2. Tom was now a student of_______.

A. Grade One

B. Grade Two

C. Grade Three

D. Grade Four

3. Tom was never late for school because_______.

A. all his teachers liked him

B. he went to school in a car

C. his house was next to the school

D. he just began to school a month ago

4. Miss Green taught her children to count from one to ten_______.

A. every day      

B. one Monday morning

C. in Tom’s house      

D. five days a week

5. Which is the best title(题目) for this story?_______.

A. Two or Three?      

B. From One to Ten

C. Tom and his family      

D. Miss Green and Her Students

单项选择题 A1型题