讀一讀，根據(jù)圖片選出句子中出現(xiàn)的單詞是A還是B? 
(     )1.  It's nine o'clock.  You can go to bed now.
    
(     )2.―What's seventeen minus three?
          ―It's fourteen.
    
(     )3.  ―How many computers can you see?
             ―Two.
1. A  2. B  3. B
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