搜题请搜索小程序“爱下问搜题”
问题 选择题
椭圆2x2+3y2=12的两焦点之间的距离为（　　）
A．2
10
B．
10
C．2
2
D．
2
答案

椭圆2x2+3y2=12化为

x2
6
+
y2
4
=1，所以a2=6；b2=4，所以c2=2，所以2c=2
2
．

椭圆2x2+3y2=12的两焦点之间的距离为：2

2
．

故选C．

阅读理解
阅读理解。
Look at the bulletin board (公告栏) of Class 3B.
    Kitty needs a new home
Kitty: 3-month-old cat. White.
Cute and beautiful.
See Elsa.

 Mr Jones from Yangming
The police officer is going to give us a special talk
 on traffic safety.
3:00 pm ~ 5:00 pm, Jan. 17.
In the gym.

  Whose wallet?
Found at the front door of the classroom on Jan. 5.
See Ms Chang.

  I'm selling A NEW NOTEBOOK for music
 classes. Just two dollars. Jack.

1. Elsa wants to _____.
    A. find a cute cat 
    B. buy a good house
    C. find a new home for a cat
    D. make friends with someone who has a cat
2.  Mr Jones will teach the students _____ in his talk.
    A. how to drive a car
    B. how to take music notes
    C. how to learn lessons well
    D. how to be safe on the road
3. Mr Jones' talk lasts _____.
    A. half an hour    
    B. one hour    
    C. two hours    
    D. three hours
4. Tony wants to buy the new notebook from Jack. He should pay _____.
    A. $2            
    B. $3        
    C. $5          
    D. $17
5. David lost his wallet on January 5. What should he do?
    A. Go to the gym at once.
    B. Ask Ms Chang about that.
    C. Meet Jack in the music class.
    D. Wait at the front door of the classroom.
查看答案
填空题

业务办理区：设置在营业厅（）；客户办理业务必须通过销售区，增加销售机会
查看答案