请分析规则接受学习的特点。

“Everything happens for the best,” my mother said whenever I was disappointed. “If you go on, one day something good will happen.” When I graduated from college, I decided to try for a job in a radio station and then work hard to become a sports announcer (广播员).

I took a taxi to Chicago and knocked on the door of every station, but I was turned down every time because I didn’t have any working experience. Then, I went back home.

My father said Montgomery Ward wanted a sports-man to help them. I applied (申请), but I didn’t get the job, either. I was very disappointed.“Everything happens for the best,” Mom reminded me. Dad let me drive his car to look for jobs. I tried WOC Radio in Davenport, Iowa. The program director, Peter MacArthur, told me they had already had an announcer. His words made me disappointed again. After leaving his office, I was waiting for the elevator when I heard MacArthur calling after me, “What did you say about sports? Do you know anything about football?” Then he asked me to broadcast an imaginary (虚构的) game. I did so and Peter told me that I would be broadcasting Saturday’s game!

On my way home, I thought of my mother’s words again:“If you go on, one day something good will happen.”

小题1:What kind of job did the writer want to get after he graduated from college?

A．A programmer.

B．A sports announcer.

C．A sportsman.

D．A taxi driver.小题2:Why couldn’t the writer get a job at first?

A．Because he didn’t want to get it.

B．Because he didn’t have any experience.

C．Because his parents didn’t agree with him.

D．Because no stations needed an announcer.小题3: Every time the writer couldn’t get a job, his mother ________.

A．said nothing to him

B．told him to give up

C．encouraged him to go on trying

D．advised him to get further education小题4:The underlined phrase “turned down” is closest in meaning to the word “______”.

A．asked

B．invited

C．refused

D．taken小题5:Which of the following is NOT true about the writer in the passage?

A．He disliked the job in Montgomery Ward.

B．He got a good job in Davenport, Iowa at last.

C．He was given a chance by Peter.

D．His father also gave him some help.

五百二十九亿零八十万六千一百写作______，把它改写成用“万”作单位的数是______，省略万位后面的尾数约是______万．

有一个圆柱形粮囤，从里面量，它的底面半径是3m，高是2.5m。稻谷按每立方米550kg计算，这个装满粮食的粮囤约装有多少吨稻谷？

液体在管内流动时，若雷诺准数大于（），则流动状态为湍流。

A、2000

B、3000

C、4000

D、5000

钻铤壁厚一般为（）mm。

A.6~8

B.9~11

C.12~14

D.14~16