问题 多项选择题

关于大地水准面的特性,下列描述正确的是()

A.大地水准面有无数个

B.大地水准面是不规则的曲面

C.大地水准面是唯一的

D.大地水准面是封闭的

E.大地水准面是光滑的曲面

答案

参考答案:B, C, D, E

单项选择题
阅读理解

阅读理解 。

     It's easy to see how to help others, but what about those whose needs aren't so obvious? This

story may have happened a while back, but it was a lesson which has stayed with me and helped

me ever since.

     It was Thanksgiving and I was volunteering with my parents at a shelter for the poor. We stood

behind the counter dishing out hot food to whoever came in. most of our dinners looked like they

had been having hard times, their clothes old, worn and dry. In short, they looked poor!

     Then, a man came in, who looked anything but poor. He was well dressed, wearing an expensive

suit. I wondered what he was doing there and my jaw dropped in amazement when he joined the

line for food. The closer he came to my service station, the more I muttered. What was this man

doing? I wanted to know. Surely he wasn't gong to take food.

     Then my mother quietly took me to one side. She said, "You have assumed that the needs of the

people who come here must be purely physical: hunger, inadequate shelter and needs are emotional?

What if he needs comfort, friends, or just to be among other human beings?" her words hit me like a

ton of bricks! I felt like I should apologize to the man, but I didn't.

     About a week later the shelter received a large donation from an anonymous source. I can't help

but wonder if it came from that man.

     Now, whether I meet others, I remember my mother's words and try to send kindness and blessings

to them, regardless of how they look.

     Needs aren't always visible. But kindness always makes a difference.

1. The task of the author at the shelter was to_______.

A. decide whether dinners looked poor      

B. learn life experience there

C. serve hot food to the poor                

D. help parents order dishes

2. When the man waited in line, how did the author feel?

A. Surprised        

B. Pitiful            

C. Excited      

D. Angry

3. The author felt he should apologize to the man, because he_______.

A. was asked to do so by his mother  

B. gave the man food much less than others

C. realized something was wrong with the man

D. knew later that the man went there to donate

4. What can we infer from the last paragraph?

A. We should show others kindness whatever their needs are  

B. Some needs can't be known clearly at times

C. Needs can always be met by kindness

D. We should find out others' needs