问题 选择题

下列不属于家鸽与飞行生活相适应的特点的是

A.长骨中空

B.体表有羽毛

C.体内受精

D.身体是流线型

答案

答案:C

题目分析:鸟类适于空中飞翔生活的结构特征 (1)外型:流线型或梭型结构 (2)有翅(翼):羽毛、翅膀展开利于飞行;3胸肌发达;(4)骨轻,长骨中空,有利减轻体重 ;(5)角质喙,无牙,直肠短,直接排出粪便 (6)肺,气囊(辅助肺的呼吸)呼吸一次进行两次气体交换,进行双重呼吸(7)心脏4腔,输送氧的能力增强,有利于有机物的分解。体循环和肺循环完全分开,体温高恒定,42度左右。(8)小脑和神经系发达;(9)没有膀胱,不贮存粪便,减轻体重,古选C。

阅读理解

阅读理解。

     I grew up in a small town. My father raised chickens and ran a construction company. I was barely

10 years old when my dad gave me the responsibility (责任) of feeding the chickens and cleaning up the

stable. He believed it was important for me to have those jobs to learn responsibility. Then, when I was

 22, I found a job in Natchbill at a country music club called the Natchbill Palace, I washed dishes and

cooked from 4: 00 pm to 9: 00 pm and then went on stage and sang until 2:00 in the morning. It wasn't

long before I became known as a singing cook. I had been rejected so many times by record companies

that it was hard not to be discouraged. One night, a woman executive (懂事) from a company named

Warner Brothers Records came to hear me sing. When the show was over, we sat down and talked

and after she left, I said to myself it was one more rejection. A few weeks later, my manager received

a phone call - Warner Brothers wanted to sign me to a record deal. Soon after, I released my first record

in June 1986. It sold over 2 million copies. My best efforts had gone into every job I've ever held. It was

the sense of responsibility that made me feel like a man. Knowing that I had done my best filled me with

pride. I still feel that way today, even though I have become a well-known singer.

1. Why was the writer once known as the singing cook?

A. Because he was a cook at a country-music club.

B. Because he sang for guests while he worked as a cook.

C. Because he often sang while cooking.

D. Because he liked singing better than cooking.

 2. Who first recognized his talents and helped make his career successful?

A. Wamer Brothers.    

B. His manager.

C. His father.

D. A businesswoman.

3. What made the writer proud of himself?

A. His ability to live independently.

B. His sense of responsibility in whatever he did.

C. His courage in the face of rejections.

D. His hard work in his early days.

单项选择题