计算机专业英语第3次作业

计算机专业英语第3次作业

1.machine languages are the most basic type of programming languages and can be understood undirectly by a computer.

错误

2.High-level languages are programming languages that must first be translated into a machine language before they can be understood and processed by a computer.

正确

3. C, C++, PASCAL, and FORTRAN is__D___?

A：Assembly languages

B：machine languages

C：Low-level programming languages

D：high-level languages

4.In machine languages, instructions are written as sequences of __A__?

A：1s and 0s

B：0123456789

._____is a means of connecting a number of computing elements together. B

A：WAN

B：LAN

C：MAN

6.The internet grew out of a computer network called__C__?

A：LAN

B：WAN

C:ARPANET

7./downloads/pryearbk.asp.The http indicates__C__?

A：the hostname

B：files

C:PROTOCOL

puter crime can take various forms, including____?

A：Damage

B：Theft

C：Manipulation

正确答案：ABC

9.Security measure consist of______?

A：encryption

B：restricting access

C：anticipating disasters

D：making backup copies

正确答案：ABCD

puter viruses activate when the instructions---or executable code----that run programs are opened.

答案：正确

11.I have no doubt_____he will overcome all his difficulties

A：which

B：what

C：that

D：if

正确答案：C

12.写出下列术语的英文或中文意思。

1.disk drive参考答案：1.磁盘驱动器

2.可擦写光驱

2.CD-RW

3.object code 3.目标代码

4. 应用程序4.application program

5. 万维网浏览器.Web browser

13：[论述题]13.阅读下列短文，从A、B、C、D四个选项中，选出最佳选项。

We are used to the idea of aging in ourselves. We are so used to this that it comes as a surprise to find that there may be some animals that do not age. Sea anemones(海葵) are an example. Some have been kept for nearly a century without showing any signs of lifelessness. Some kinds of sea worms can even "grow backwards." If kept in the dark and given nothing to eat, they get steadily smaller, They finally end as a ball of cells(细胞) looking rather like the egg from which they came. Under good conditions the ball will turn back to a worm and start growing again. One could probably keep them growing and un-growing again and again.

1. Some sea worms grow smaller when they ______.

A. lose weight

B. live in the darkness

C. are under good conditions

D. don't eat and are kept in the dark

2. According to the passage, some sea animals ________.

A. will die when they become a ball of cells

B. do not grow old

C. will die without food

D. will stop growing any time they want

3. According to the passage, which of the following statements in NOT true?

A. We can keep certain kind of sea worm growing and un-growing again and again.

B. Human beings will grow old and die.

C. An anemone is a king of sea worm that can grow backwards.

D. Some anemones will live nearly a hundred years.

4. The underlined word aging in the first sentence means ______.

A. growing old

B. the age of a person