小球在斜面上从静止开始匀加速下滑,进入水平面后又做匀速直线运动.下列图象中可以反

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问题:

小球在斜面上从静止开始匀加速下滑,进入水平面后又做匀速直线运动.下列图象中可以反映小球的这一运动过程的是( )

考点:v-t图像
题型:选择题

亚里士多德在《政治学》中认为,世上有两种形式的平等,即数量平等和比值平等。数量平等是绝对平均主义,比值平等则是根据个人的实际价值,按比例分配与之相称的事物。根据以上观点,通常所说的“分数面前人人平等”应该是 [ ]

A.更接近于数量平等

B.更接近于比值平等

C.数量平等高于比值平等

D.既非数量平等又非比值平等

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消渴病久治不愈,肝肾精血不足,白内障、雀盲、耳聋、视瞻昏渺,宜选方()

A.六味地黄丸

B.麦味地黄丸

C.杞菊地黄丸

D.参芪地黄丸

E.金匮肾气丸

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     In early autumn I applied for admission to college. I wanted to go nowhere but to Cornell University,  

but my mother fought strongly against it. When she saw me studying a photograph of my father on the

sports ground of Cornell,  she tore it up. 

     "You can't say it's not a great university,  just because Papa went there."   

     "That's not it at all. And it is a top university." She was still holding the pieces in her hand. "But we

can't afford to send you to college."

     "I wouldn't dream of asking you for money. Do you want me to get a job to help support you and

Papa? Things aren't that bad,  are they?"

    "No, " she said."I don't expect you to help support us."

    Father borrowed money from his rich cousins to start a small jewellery shop. His chief customers

were his old college friends. To get new customers,  my mother had to help. She picked up a

longforgotten membership in the local league of women,  so that she could get to know more people.

Whether those people would turn into customers was another question. I knew that my parents had to

wait for quite a long time before their small investment(投资) could show returns. What's more,  they

had not wanted enough to be rich and successful; otherwise they could not possibly have managed

their lives so badly.

     I was torn between the desire to help them and change their lives,  and the determination not to

repeat their mistakes. I had a strong belief in my power to get what I wanted. After months of hard study

I won a full college scholarship (奖学金). My father could  hardly contain his pride in me,  and my

mother eventually gave in before my success.                                      

1. The author was not allowed to go to Cornell University mainly because________.

A. his father graduated from the university

B. his mother did not think it a great university

C. his parents needed him to help support the family

D. his parents did not have enough money for him

2. The father started his small shop with the money from________.

A. a local league              

B. his university

C. his relatives                

D. his college friends

3. Why did the mother renew her membership in the league? 

A. To help with her husband's business.    

B. To raise money for her son.

C. To meet her longforgotten friends.    

D. To better manage her life.

4. According to the text,  what was the author determined to do in that autumn?   

A. To get a wellpaid job for himself.

B. To improve relations with his mother.

C. To go to his dream university.

D. To carry on with his father’s business.

题型:选择题

发动机气门积碳不会造成()

A.怠速抖动

B.进气量不足

C.冷车难启动

D.喷油增加

题型:选择题

这件事不是很重要。

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