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问题 选择题

I             cakes and hot dogs.[ ]

A. like                  

B. likes                 

C. like at

答案

答案：A

阅读理解
阅读理解。
PeterBillRoseTomRuby
baseball√×
basketball√×
volleyball√×
soccer ball√×
baseball bat×
tennis racket×√

1. Does Peter have a basketball?
    ________________________________________
2. Does Rose have a baseball?
   ________________________________________
3. Does Tom have a soccer ball?
    ________________________________________
4. Does Bill have a baseball bat?
   ________________________________________
5. Does Ruby have a soccer ball?
    _______________________________________
6. ________________________________________
   Yes, Bill likes baseball.
7.________________________________________ 
   No, Peter doesn't have a tennis racket.
8. ________________________________________ 
    No, Tom doesn't like basketball.
9. ________________________________________ 
     Yes, Ruby has a baseball bat.
10. _______________________________________ 
     Yes, Rose has a tennis racket.
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单项选择题

利用超声方法进行测距的误差是

A．50%
B．20%
C．3%
D．0.5%
E．没有误差
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