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提问人：网友ziyan347583 发布时间：2022-01-06

[主观题]

In the following essay, each blank has four choices. Choose the most suitable one from the

four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private - key encryption methods are called(66)ciphers, information is encrypted with(67)both the sender and receiver hold privately. Public - key encryption methods are called(68)ciphers,(69)created for each user, encryption key and decryption key ale(70).

A．synchronous

B．Asynchronous

C．symmetric

D．asymmetric

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第1题

Choose from four options in each question. There are more than one right answers. (10 points each) In product selection, sellers should do the following analysis:

A、Market volume and trend

B、Bestsellers or super deals

C、Buyers’ preference

D、Product life cycle analysis

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第2题

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第3题

The _____ socket is used with a connectionless protocol.

A、stream

B、datagram

C、raw

D、default

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第4题

Each of the four sentences (No.63 to No.66) is followed by three choices of suggested translation marked A), B), and C). Make the best choice 11. The healthcare and social assistant sector will account for almost a third of the job growth from 2012 to 2022.

A、A) 从2012年至2022年，从事医疗保健工作的员工将占社会救助业的三分之一。

B、B）从2012年至2022年，医疗保健和社会救助业几乎将占就业增长的三分之一

C、C）从2012年至2022年，医疗保健和社会救助业将会占到三分之一的就业岗位。

D、D）从2012年至2022年，医疗保健和社会救助业将会占到就业岗位的三分之一。

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第5题

Please choose the right sentences from the following four sentences.

A、Since I get my smart phone, I spend too much time texting my friends, I hardly ever send e-mails anymore.

B、Since I get my smart phone, I hardly ever send e-mails. Instead, I spend too much time texting my friends.

C、Hardly do I email my friends since I get my smart phone.

D、Since I get my smart phone, I don't e-mail my friend, I spend too much time texting them.

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第6题

Choose from the answers below to diagnose what’s wrong with the following sentence. Clint didn’t talk much he just stared you down with cold, dead eyes. （）

A、It is a sentence fragment.

B、It has a comma splice.

C、It is a regular run-on sentence.

D、“He” should be capitalized.

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第7题

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第8题

B．Asynchronous

C．symmetric

D．asymmetric

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第9题

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A．生命周期法

B．原型法

C．CASE开发方法

D．面向对象开发方法

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