若最简二次根式3x-102x+y-5和x-3y+11是同类二次根式．（1）求x、

搜题请搜索小程序“爱下问搜题”

问题解答题

若最简二次根式

3x-10	2x+y-5

和

x-3y+11

是同类二次根式．
（1）求x、y的值．
（2）求

x2+y2

的值．

答案

（1）由题意得，3x-10=2，2x+y-5=x-3y+11，

解得x=4，y=3；

（2）当x=4，y=3时，

x2+y2

42+32

=5．

填空题

单词拼写。

1. Attention please, boys and girls! I have an a______ to make.

2. Everybody should be a_____ of the importance of obeying the traffic regulations.

3. He went to town for the p______ of buying a new television.

4. Such a mistake would perhaps lead to disastrous c______.

5. He was a______ for trying to rob the bank the other day by the police.

6. She left the letter there _______(故意地) so that you'd see it.

7. The winter holiday is_______(临近).Have you made a plan for it?

8. I have no _______(同情)for students who get caught cheating in exams.

9. He rushed into the classroom, ______(道歉) for being late.

10. Illegal hunting of _______(濒临危险) animals is punished by law.

单项选择题 A1/A2型题

棘慢复合波节律可见于（）。

A.过度换气反应

B.心因性发作

C.强直发作

D.唤醒反应

E.局灶性癫痫发作