问题 填空题

点P(a+5,a﹣1)是第四象限的点,且到x轴的距离为2,那么P的坐标为   

答案

(4,﹣2)

题目分析:根据第四象限的点的纵坐标是负数和到x轴的距离列出方程求出a的值,然后计算即可得解.

解:∵点P(a+5,a﹣1)是第四象限的点,且到x轴的距离为2,

∴a﹣1=﹣2,

解得a=﹣1,

∴a+5=﹣1+5=4,

∴点P的坐标为(4,﹣2).

故答案为:(4,﹣2).

点评:本题考查了各象限内点的坐标的符号特征,记住各象限内点的坐标的符号是解决的关键,四个象限的符号特点分别是:第一象限(+,+);第二象限(﹣,+);第三象限(﹣,﹣);第四象限(+,﹣).

阅读理解

Reading comprehension.

     Nick Petrella is a doctor in Montreal. He works 60 hours a week. He takes care of more than100 patients

a week in the hospital and at his office. He's been a doctor for ten years.

     Dr. Petrella offers lots of help to his patients. But he doesn't just tell his patients what to do. He also sings

to them on television! Dr. Petrella has his own TV show. The show is in Italian, English and French. The

doctor starts the show with a song and then he explains a medical problem or disease in simple language. After

that, he sings another song.

     Dr. Petrella makes and performs in his own show every week. The program is very popular with his patients

and with people who enjoy his singing. His dream is to perform in Las Vegas. His favorite songs are love songs,

and he has a CD of love songs that he wrote. Dr. Petrella says, "I always love to sing. All my problems are gone

when I sing." But when Dr. Petrella was young, his father didn't want him to be a singer. So he went to a

medical school.

     Some people tell Dr. Petrella he can help people more as a doctor. But Dr. Petrella says he helps people when

he sings, too. I like to make people smile. Sometimes it's difficult to make a sick person smile. Medicine and

entertainment both try to do the same thing. They try to make people feel good.

1. In his TV show, Dr. Petrella _____.

A. sings love songs he wrote

B. sings about different diseases

C. sings and explains a medical problem

2. _____ isn't used in his TV show.

A. Russian

B. English

C. Italian

3. Dr. Petrella performs in his show _____.

A. become famous

B. make people feel good

C. achieve his dream

4. From the article, we can know Dr. Petrella is _____.

A. talented and proud

B. creative but lazy

C. kind and helpful

5. What's the best title (标题) of the article?

A. Medicine and Entertainment

B. His Dream Came True

C. A Singing Doctor

单项选择题