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机动车在哪些路段不得掉头？请列举3个

答案

参考答案：

在有禁止掉头或者禁止左转弯标志、标线的地点；铁路道口；人行横道；桥梁；急弯；陡坡；隧道；容易发生危险的路段。

完形填空
完形填空。
      Jack buys     1     beef. The butcher (屠夫) tells him the recipe and gives him some relish.
"But I can't remember your words." Jack says. "Will you write them    2    for me?" The butcher
does     3     .    4      the meat in his hand and the note in his pocket, Jack goes home     5     .
A dog runs     6     him on the way. Suddenly it comes     7      him, takes the meat away      8    
 him and runs off. Jack stands there and doesn't know      9    . After a while he laughs and says,
"Never mind. You don't know how      10     it. The recipe is still in my pocket."
( )1. A. a cup of 
(     )2. A. in       
( )3. A. so       
(     )4. A. Have    
( )5. A. happily  
(     )6. A.in        
( )7. A. on       
( )8. A. of       
( )9. A. what to do
( )10. A. cooking  		B. a teaspoon of
B. at          
B. that        
B. With        
B. happy       
B. out         
B. after       
B. from        
B. why         
B. to cook      		C. a box of       
C. down           
C. it             
C. In             
C. sad              
C. of            
C. at             
C. to               
C. what does he do
C. cooked          		D. a piece of   
D. on              
D. such         
D. On              
D. sadly         
D. after           
D. out               
D. with       
D. where he is                 
D. eat     
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选择题

甲、乙两物体在同一直线上，同时由一位置向同一方向运动，其速度-时间图像如图所示，下列说法正确的是（    ）

A．甲作匀加速直线运动，乙作匀速直线运动；

B．开始阶段乙跑在甲的前面，20s后乙落在甲的后面

C．20s末乙追上甲，且甲、乙速率相等

D．40s末乙追上甲
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