题干

点M(3,4)到圆x2+y2=1上的点的距离的最小值是(   )

A:1

B:4

C:5

D:6

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答案(点此获取答案解析)

B

同类题1

信息归纳,请根据短文内容,完成信息表。

What's your hobby? Last Friday, the School Student Union made a survey about this. The following are the ideas of four middle school students.

I like playing football very much. I think it is one of the most popular ways to relax. And it can help me grow stronger. I often play football on PE lesson and after school. In this way I make friends with a lot of football-likers. (Li Xiaofeng)

My hobby is singing. It's a great hobby! Singing can be used to relieve(解除) my fatigues(疲劳).Singing makes me happy when I'm sad. While I am singing songs, I can share other's joys and sorrow(悲痛) in the life. I really enjoy singing. I keep practicing singing every day. And I hope to become a singer one day.(Yuan Zhihua)

I am a 15-year-old student in Junior Grade 3. Though I am occupied with my study, I would like to spend time on my hobbies. One of my hobbies is reading. It can not only kill the time, but also, more important, help improve my comprehension ability. While reading, I can learn a lot. (Chen Jiayao)

Online games are my favorite. I spend lots of time playing on-line games every day. In this way I have made many friends. I think online games make me clever and confident, thought I am not good at my lessons. (Liu Wei)

Information Card

Name

Hobby

Reasons

Li Xiaofeng

Playing football

Help him grow stronger and ____.

Yuan Zhihua

Singing

____and make her happy.

Chen Jiayao

____

____ and help improve comprehension ability.

Liu Wei

Playing online games

Help to make friends and make him____.