问题 填空题
设抛物线 y2=4x的一条弦AB以P(
3
2
,1)
为中点,则该弦所在直线的斜率为______.
答案

设A(x1,y1),B(x2,y2

y12=4x1y22=4x2

两式相减可得,y12-y22=4(x1-x2)即(y1+y2)(y1-y2)=4(x1-x2

由P为AB的中点可得y1+y2=2

KAB=

y1-y2
x1-x2
=
4
y1+y2
=2

故答案为:2

完形填空
完形填空。
     Mr. Green had a new telephone number. 1   he got it, it was the number of a
shop. The shop now had a new number, but a lot of women did not know   2  , so
they  3   telephoned the old one.
    At first, Mr. and Mrs. Green always said, "We are   4  .You have called   5    
number. The shop has a new one now."But women still continued to call them to    6    things. So after    7  , Mr. and Mrs. Green began to answer them like this"
Good morning, madam. What do you want us to send you today?"They thought, "
Perhaps they will   8   to us when they don't  9  their things. "But this didn't help them because now women began to telephone them more and more, and to say   10   ,"
Where are my things? They haven't come yet! Why haven't you sent them yet?"
( )1. A.After            
( )2. A.it              
( )3. A.also            
( )4. A.sure            
( )5. A.wrong            
( )6. A.ask              
( )7. A.some time        
( )8. A.stop telephoning
( )9. A.find            
( )10.A.happily     
B. Before          
B. them            
B. still            
B. sorry            
B. mistaken        
B. ask for          
B. sometime        
B. stop to telephone
B. sell            
B. angrily         
C. When              
C. this              
C. never              
C. believe            
C. the wrong          
C. sent for          
C. sometimes          
C. go on telephoning  
C. get                
C. worriedly          
D. As soon as              
D. these                    
D. just                    
D. here                    
D. your                    
D. reach                    
D. some times              
D. go on to telephone      
D. take                    
D.  hurriedly     
         
  
阅读理解与欣赏

阅读乐园(阅读短文并回答问题)。

__________________

  在大森林里,一只豹不小心从树上摔下来,伤得很厉害。他一连好几天躺在床上,“哎哟哎哟”地叫着:“我不能再捕猎了,得赶快想个办法,我要饿死了。”他想啊,想啊,终于想出了一个办法。

  豹装出快要死的样子,对树上的猴子说:“亲爱的猴子,你快去通知所有的动物,就说我得了重病,快要死了。让他们一个个来看我,我想和他们作最后的告别。”

  猴子把豹的口信很快传给了森林里的动物们。大家都可怜豹,便一个一个地去看望豹。

  鹿去了,袋鼠去了,野猪去了……乌龟[  ]住得远,走得又慢,[  ]落在了后边。当他慢慢地爬到豹的家门口的时候,突然发现地上动物们的脚印都朝着一个方向--只有进去的,没有出来的。他想了想,一下子明白了:“噢,原来豹的家是进得去出不来的呀!哼!我还是别去看他吧!”

  躺在床上的豹听见门外轻轻的脚步声,心里暗暗高兴。但是,过了一会儿,脚步声越来越远,终于听不见了。

1.给短文加上一个合适的题目。

2.在“[ ]”里填上适当的关联词。

3.短文中共讲了(  )个动物,分别是______________。请你结合故事的内容,选出两个动物,分别对他们说一句话。

对(  )说_______________________________________

对(  )说_______________________________________

4.如果你也是森林动物中的一员,遇到这种事,你会怎么做?把你的做法写下来。

______________________________________________________________________