Part B
Directions: You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.
听力原文: My friend Tom kepi birds. One day he phoned and told me he was going away for a week. He asked me to feed the birds for him and said that he would leave the key to his from door in my mailbox.
Unfortunately, I forgot all about the birds until the night before Tom was going to return. What was worse, it was already dark when I arrived at his house. I soon found the key Tom gave me could not unlock either the front door or the back door. I was getting desperate. I kept thinking of what Tom would say when he came back.
I was just going to give up when I noticed that one bedroom window was slightly open. I found a barrel and pushed it under the window. As the barrel was very heavy, I made a lot of noise. But in the end, I managed to climb up and open the window.
I actually had one leg inside the bedroom when I suddenly realized that someone was shining a torch up at me. I looked down and saw a policeman and an old lady, one of Tom's neighbors. "What are you doing up there?" said the policeman. Feeling like a complete fool, I replied, "I was just going to feed Tom's birds."
Why couldn't the man open the door?
A.His friend gave him the wrong key,
B.He didn't know where the back door was.
C.He couldn't find the key to his mailbox.
D.It was too dark to put file key in the lock.
第1题
对肌紧张不正确的叙述为
A.是维持姿势的最基本的反射活动
B.表现为受牵拉的肌肉发生紧张性收缩
C.脊休克使肌紧张的反射弧破坏
D.属于牵张反射的一种
E.感受器在肌肉本身
第2题
A、是维持姿势的最基本的反射活动
B、表现为受牵拉的肌肉发生紧张性收缩
C、脑干网状结构对肌紧张的调节是通过网状脊髓束实现的
D、脊休克时该反射的反射弧被破坏
E、属于牵张反射的一种
第3题
A.受牵拉的肌肉发生紧张陛收缩
B.是缓慢持续牵拉肌腱引起
C.对维持站立姿势有重要意义
D.感受器是肌梭
E.反射收缩的力量不大,因此不表现为明显的动作
第4题
A.屈肌的肌紧张表现明显
B.主要的生理意义是维持站立姿势
C.肌紧张的反射中枢在脊髓
D.肌紧张的感受器是肌梭
E.表现为同一肌肉不同运动单位的交替性收缩
第5题
关于肌紧张,错误的是
A.由缓慢和持续牵拉肌腱时引起
B.为多突触反射
C.表现为同一肌肉的所有运动单位同步收缩
D.受牵拉肌肉的紧张性收缩
E.维持机体姿势的最基本反射活动
第6题
关于肌紧张,错误的是
A.由缓慢和持续牵拉肌腱时引起
B.为多突触反射
C.表现为同一肌肉的所有运动单位同步收缩
D.受牵拉肌肉的紧张性收缩
E.维持机体姿势的最基本反射活动
第8题
脊髓前角γ运动神经元的作用可使()。
A.梭外肌收缩
B.维持肌紧张
C.负反馈抑制肌紧张
D.调节肌梭对牵拉刺激的敏感性
E.腱器官兴奋
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