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     Look here, please! Can you see the man in black?   1   is Mr Lee, my English teacher. He teaches (教)
us   2  . He is a very good teacher.   3   is he? He's forty-five. He is   4   America. He has a small yellow car.
It's beautiful. It's   5   the tall building now. He goes to   6   by car every day. He leaves (离开) home at 7:00
a.m. and gets home at 5:00 p.m. Tom and Tim are his twin sons.   7   are not in our school. They are in No.1
Middle School. They are in   8  . They go to school early every morning. They are both good   9  . They are
good at English. But they can't speak Chinese. Today they are not  10  school, because it is Sunday.
( ) 1. A. He          
( ) 2. A. classes     
( ) 3. A. What        
( ) 4. A. in          
( ) 5. A. under       
( ) 6. A. home        
( ) 7. A. He          
( ) 8. A. Class five  
( ) 9. A. students    
( ) 10. A. to          		B. She               
B. English       
B. How              
B. from            
B. on             
B. work            
B. They              
B. class five      
B. classes         
B. at           		C. This                
C. Chinese       
C. How old            
C. of               
C. behind         
C. working         
C. We                   
C. Class Five                         
C. girls           
C. for           
答案

1-5 ABCBC  6-10 BBCAB

解答题

紫背天葵是一种保健型蔬菜，菜农常采用扦插的方式对其进行繁殖．对扦插材料处理的方法不同，将影响扦插的成活率．在处理扦插的茎段时，在茎段下方是切成水平切口？还是切成斜向切口？请你设计一个实验，探究哪种处理方法更容易使茎段成活．

（1）实验变量是______．

（2）作出的假设是______．

（3）实验步骤：①准备20支生长良好的紫背天葵枝条，将它们剪成保留2个节的茎段，按要求处理茎段叶片和茎段上方切口．②将以上准备的茎段分成均等的两份，分别标上标签A与B．将A组的茎段下方切成______．将B组的茎段下方切成______．③将两组的茎段按要求插入沙性土壤中，在相同且适宜的环境条件下培育．

（4）观察记录：每天定时观察A、B两组的茎段看哪组先长出新叶，作好记录．

（5）预测可能的三种结果及相关结论：①如果斜向切口组先于水平切口组长出新叶，则斜向切口的茎段容易成活；②如果水平切口组先于斜向切口组长出新叶，则水平切口的茎段容易成活；③如果水平切口组和斜向切口组同时长出新叶，则茎段下方的切口不管是水平的还是斜向的均不影响扦插的成活．
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单项选择题

消化道出血患者出现呕血提示胃内出血至少有（）

A.100～200ml

B.200～250ml

C.250～300ml

D.300～500ml

E.500～1000ml
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