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阅读理解. Two men walked quietly up to the open windows of a small house in the darkness.'We can take what we want from this house,' one of them said. The taller of the two men quickly climbed through the open window into one of the rooms.'Give me your torch (手电筒).' he told his friend. 'Go round to the door. Wait there until I open it for you.' His friend disappeared (消失).Then the man turned on the torch and walked quietly towards the door. Before he reached the door, he suddenly stopped. He found a man. The man was sitting in a big chair in a corner of the room. He was looking at the tall man. His eyes never moved. The tall man cried out and threw the door open and he shouted to his friend to run after him. They didn't stop running until they were far away from the house. They never knew that the man could see nothing because something was wrong with his eyes. 1.What were the two men? They were _______. A. workers B. thieves (小偷) C. policemen D. guests 2.The tall man walked through the room to _______. A. turn off the light B. find the owner of the house C. open the door D. wait for his friend 3. Where did the tall man meet the man sitting in a big chair? A. Near the door. B. In a small house. C. In a corner. D. Both B and C. 4.The owner's eyes didn't move because _______. A. he like sleeping in a chair B. he couldn't see anything C. he was too frightened (害怕) to move D. he was sleeping 5.Why did the man throw the door open? Because _______. A. he was very afraid of the man in the chair B. he had known the man before C. the owner of the house would take hold of them D. he wanted his friend to come in at once
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B.
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D.
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当 d i <0 时, d i+1=d i +0.1 当 d i>=0 时, d i+1 =d i -0.9
B.
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C.
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D.
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