问题 问答题 简答题

露天浅孔台阶爆破与露天深孔台阶爆破的不同点是什么?

答案

参考答案:露天浅孔台阶爆破与露天深孔台阶爆破,二者基本原理是相同的,工作面都是以台阶的形式向前推进;不同点仅仅是前者孔径、孔深比较小,爆破规模比较小。

阅读理解

阅读理解。

      Buster Brown was a thief and a good one too,he thought.  He'd never been

caught by the police because he never took chances. He was always prepared for any

unforeseen event or emergency.

     Confidently,he stood outside the house of his intended victim(受害者)and read

the sign on the front gate of the house. "Don't worry about the dog-be aware of the owner!" it said.

Buster smiled and found his way in.

     The house looked quite normal outside,but inside it was very exotic with fascinating objects on

display. As he began putting them into his bag,a dog came into the room. It stopped when it saw

Buster,then wagged its tail madly and went over to him,licking his outstretched hand.   "Good boy,"

Buster whispered.   "What a great

guard dog you are-trying to lick me to death." Satisfied he'd made friends with the dog,Bluster began

to wander round the house,choosing items to put in his bag. His skilled eye picked out only the best

antiques(古董):a pair of silver candleholders,a silver tea-and-coffee service,etc. . His new friend, the

dog,sat and watched,as if wondering what was happening.

    "Well,boy," Buster whispered,finally. "That might do. Any more and I won't be able to carry it!"

He swung the heavy bag onto his shoulders, just as the lights came on, nearly blinding him. He

shielded his eyes with his hand.

      "You're a very silly person," the figure in the doorway said, his voice dry and dust. As the man

came closer, Buster could see he was well dressed. His face seemed familiar, but Buster couldn't

quite place where he had seen him before.

      "You should have taken more notice of the sign outside," the man rasped. "I knew about this

attempted robbery last week and I also know you will end up behind bars for 20 years. Fancy trying

to rob the house of the world's greatest fortune-teller!"

1. Why was Buster so confident?

A. He was not afraid of dogs.      

B. He knew the owner of the house lived alone.

C. The house had no security alarm.  

D. He had never been caught by the police.

2. Which of the definitions is closest in meaning to the word "exotic" in the third  paragraph?

A. Messy and untidy.            

B. Rich and expensive.

C. Foreign and unusual.        

D. Comfortable and calming.  

3. How did Buster decide which objects to take?  

A. He took those that were easy to carry in his bag.

B. He took only the best antiques.

C. He took those that he knew he could sell easily.

D. He looked for silver objects.

4. What punishment waits for Buster Brown?  

A. A long prison sentence.            

B. A prison sentence with hard labor. 

C. A heavy fine.                      

D. Community service for 20 years.

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