Joanne had planned to leave work early this afternoon and have a bath before going out to a meeting．
When she arrived at her house，she noticed something strange about Sheba，a large dog．Sheba was lying on the floor and could hardly breathe（呼吸）．Joanne realized she would have to take her to the vet immediately．
"It looks like something is stuck in her throat，"said Dr．Sterne，"it shouldn't take me too long to get it out．"
As she was going to a meeting，Joanne left the doctor with the dog and rushed back home．When she was once more entering the house，the phone rang．Dr．Sterne's anxious voice was heard，"I want
you to get right out of your house immediately，said the doctor．The police will be there any time now．Wait outside for us．"Joanne was confused and frightened（吓坏的）．She quickly ran into the street．
At that moment，a police car stopped outside the house．Two policemen got out and ran into the house，without explaining anything．Then the doctor arrived．Just then，the two policemen came out of the house，carrying a man，who，it seemed，could hardly walk．There was blood（血）all over hinii
"I think he must be a thief，"said the doctor．"I knew he was there because I finally took three human fingers out of Sheba's throat．"
50．When Joanne arrived home，she found that___．
A．the dog was hurt by a thief
B．there was something wrong with the dog's leg
C．something was stuck in the dog's throat
D．the door was open and something was lost
51．"The vet"in this passage is___．
A．a place where a doctor lives
B．a doctor for sick animals
C．a police station nearby
D．a policeman on duty
52．Why did the doctor ask Joanne to get out of the house___？
A．Because there was another dog there．
B．Because he wanted to meet her outside．
C．Because he knew there was a thief inside．
郝学伟回答：
50．答案C 细节理解题由文中"It looks like something is stuck in her throat，"said Dr．Sterne 可知"看起来，它好像给什么东西哽在喉咙"，斯特恩医生说，故选C51．答案B 词义猜测题...
