问题 单项选择题

在从A到B的前进方向上,高差hAB<0,则A点的后视读数______B点的前视读数。

A.小于
B.大于
C.等于
D.无法确定

答案

参考答案:A

解析: 本题主要考查的知识点为水准测量原理。
根据水准测量原理hAB=a-b,即为后视读数减去前视读数。hAB=a-b<0,即a<b。hAB为正,表示B点高于A点,hAB为负,表示B点低于A点。

单项选择题
阅读理解

After we finished thirteen miles of hiking, we were tired and our muscles ached as we made our way back to New England. The car ride to the airport followed by a two-hour flight left our legs more worse condition than they were when we first came off the mountain we just climbed.

When we heard that two seats in first class on our next flight were available for a bit higher price, we jumped at the opportunity. Our spirits lifted immediately. After all, flying first class was a new experience for us, and we would end our adventure in comfort and style.

As we boarded the plane, we noticed that the stewardess(空姐) was working non-stop to ensure the comfort of the first class passengers. She could not walk by a seat without receiving an order. How much she must love her job! She smiled kindly at each one while attending to their needs.

As the stewardess walked by our seats near the end of the flight, I looked at her and said, “Thank you and I hope you have a great night.” She stopped, bent down, looked at me and said, “Excuse me.” I repeated my words and she smiled in a rather funny way, almost as if I had asked her a question that she did not know how to answer.

After a few moments she returned to our seats. “I can tell you work with the public,” she said. “Why do you think so?” I asked. She answered very quietly, “Because you are the only passenger here to say something nice to me tonight and I really appreciate your kindness.”

The sense of belonging to the elite(精英) group of people in first class disappeared as we heard her words. Our first class seats offered us more than a comfortable ride. We were reminded that without kindness, we would be flying in no class.

小题1:Where did the writer ever go hiking?

A.In a forest

B.In a mountain

C.Along a river

D.Near an airport小题2:Why did they choose to take a first class flight?

A.Because they were extremely tired

B.Because they wanted to go back as soon as possible

C.Because the tickets were cheaper

D.Because they wanted to enjoy the first class service.小题3:After boarding the plane, the writer felt_______.

A.proud

B.uncomfortable

C.nervous

D.disappointed小题4:When the stewardess first heard what the writer said, she_________.

A.didn’t understand the writer

B.knew what work the writer did

C.didn’t believe her ears

D.had a big smile on her face