下述的地理环境中属于干湿度地带分异分布规律的是[ ] A、青藏高原的高山植物区

婴儿5天大，精神倦怠、吸吮无力、昏睡、抽搐发作，查体肌张力增高，血清胆红素450mg/L。考虑哪种疾病（）

A.先天性婴儿偏瘫

B.后天性婴儿偏瘫

C.脑炎

D.核黄疸

E.脑性痉挛性双侧瘫

在学校艺术节文艺汇演中，甲、乙两个舞蹈队队员的身高的方差分别是S甲2=1.5，S乙2=2.5，那么身高更整齐的是______队（填“甲”或“乙”）．

When I was four years old，I broke my elbow. After many weeks in a cast (石膏) I returned to the hospital to finally have it removed. My mother found it strange that I was so enthusiastic about returning to the place where I had experienced so much pain. Yet she soon discovered my fas­cination with the healing process and how doctors helped to enhance it.

I was in fear as the doctor removed my cast and asked me to move my arm，and immediately became scared as the pain came shooting back through my elbow. After another series of X-rays and examinations my arm was put into a new cast I had begun to doubt the reliability of the doctor，and my mother thought I would be unwilling to return a second time.

When the day came to have my cast removed again，I was nervous. Yet I was optimistic enough to trust the doctor as he once again removed my cast and asked me to move my arm. And this time it was better! Nothing hurt!

On the way back home I released (松开) my mother's hand and ran ahead，and out of her sight. She was immedi­ately worried that I would come upon someone dangerous. At the age of four I was already known for liking to talk with strangers that I felt were potential friends. When she caught sight of me again， I was looking up into the face of an old broken-legged man，saying，“Don't worry，sir! The doctor will fix your leg. Look how he fixed my arm！” 

Since then I have continued to be fascinated with the human body and medicine. I also still love to help people，and never miss an opportunity to encourage someone. But most of all，I still believe that optimism and trust are the building blocks of happiness and success. Many things can change，but I am proud to say that these parts of me have always stayed the same.

56.The author was nervous when he returned to the hospi­tal the second time because      .

A. the hospital seemed like a more frightening place   B. the doctor there was unskilled

C. he was afraid of the pain         D. he was sure his elbow wouldn't recover

57.What did the mother fear when the author ran out of her sight on the way back home?

A. That he would break his elbow again.

B. That he would run down others and break their legs

C. That he would lose his way.

D. That he would come upon a dangerous stranger and get hurt.

58.What can we learn about the author from the passage?

A. He is optimistic and enthusiastic.     B. He was hard-working as a young boy.

C. He doesn't like making friends with strangers.

D. He could become anything but a doctor.

59.Which of the following would be the best title for the passage?

A. An Unforgettable Hospital Experience        B. Lessons of a Broken Bone

C. What Makes for Happiness and Success?      D. Broken Bones Take Long to Heal

行业的竞争结构是指行业内企业的数量和规模的分布，理论上可以分为( )。

A．完全竞争

B．寡头垄断

C．单头垄断

D．完全垄断

E．双头垄断

TTQ400-1140（660）启动器控制电机最大功率为400KW。（）