一个加密过程就是根据一定的 【18】  ,将明文与密钥相结合,从而产生旁人不可理解的

题型:填空题

问题:

一个加密过程就是根据一定的 【18】  ,将明文与密钥相结合,从而产生旁人不可理解的密文。

考点:计算机等级考试网络技术三级网络技术笔试
题型:填空题

按要求补充成语。     

1.在括号内填近义词。  

      (    )虚(    )假      家(    )户(    )      (    )多(    )广      左(    )右(    )  

      (    )天(    )地      千(    )万(    )      (    )身(    )骨      (    )敲( )击

2.在括号内填反义词。 

      ( )(    )分明    (    )惊(    )怪      (     )应(    )合     三( )两(     )  

      自( )至(    )    (    )思(    )想      同( )共(    )     举足(     )( )

题型:填空题

It's time ____________ get up. [ ]

A. at

B. for

C. to

题型:填空题

具有补益肺、脾、肾三脏功效的药物是( )

A.益智仁

B.天冬

C.山药

D.西洋参

E.补骨脂

题型:填空题

夏明和王海将一个重为500N,底面积为0.5m2的箱子连推带拉沿水平方向匀速移动了10m,用时50s.若夏明在前面拉,水平拉力为100N,王海在后面推,水平推力为120N,推力和拉力在一条直线上.请你根据给出的示例自己设置2个问题,并进行定量计算.

示例:

问题:此过程中物体对地面的压强为多大?

物体对地面的压强为:p=

F
S
=
500N
0.5m2
=1000Pa

问题一:______

问题二:______

题型:填空题

阅读理解

     One of the greatest stories of rags to riches success is that of Andrew Carnegie, who started life in

poverty but became one of the richest men in the world.

     Carnegie was born in Scotland in 1835, the son of a weaver. In 1848, the family moved to the United States and at 13 Carnegie began to work in a cotton mill, earning $1.5 per week.About three years later,

he found a better job as a telegraph messenger boy. At work, his superiors (上级) were impressed by

his abilities and willingness to work hard. In 1853, he gained an office job at the Pennsylvania Railroad

Company. This was his first big break. He continued to impress and rose rapidly through the company,

gaining_more_and_more_responsibility.At the same time, Carnegie loved reading very much and made

use of every opportunity to visit the library.He read widely on all subjects, particularly literature.

     Carnegie now began to save a little money and, with the help of his employer, began to make some

successful investments. He invested in the iron industry and eventually set up in business himself, owning

several iron and steel plants. This was where he made his fortune.By the 1890s, the Carnegie Steel

Company was the biggest and most profitable business in the world.

     Carnegie had always believed that the pursuit (追求) of wealth was never an end in itself. In his view,

successful, wealthy people should redistribute their wealth for the benefit of everyone in society. True to

his word, in 1901, at the age of 66, he retired from business and devoted the rest of his life to charity

work.

     Carnegie's lack of formal education and his poor family background clearly didn't put barriers in the

way of success. His rapid rise from poverty to wealth was due to his willingness to work hard, his

intelligence and good business sense, and his talent for making things happen. He died in 1919 at the age

of 83.

1. What can be learnt from the text?

A. Carnegie's employers had a high opinion of him.

B Carnegie made the investments independently after saving enough money.

C. Carnegie believed that we should try to earn as much money as possible in our life.

D. Carnegie could have been more successful if he had been formally educated.

2. What does "gaining more and more responsibility" in the second paragraph most probably mean?

A. Becoming more and more intelligent.

B. Being promoted to higher ranks.

C. Having a better sense of confidence.

D. Reading more and more books.

3. When did Carnegie get his first big success in his life?

A. When he took a job as a telegraph messenger boy.

B. When he worked at the Pennsylvania Railroad Company.

C. When he made investments in the iron industry.

D. When he founded the Carnegie Steel Company.

4. Which of the following will be the suitable title for the text?

A. Andrew Carnegie: A Wealthy Man

B. Steel & Iron: The Most Profitable Business

C. From Rags to Riches: The Story of Andrew Carnegie

D. Intelligence and Good Business Sense: Two Factors in Becoming Wealthy

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