问题 单项选择题

目前,广泛使用的电子邮件安全方案是S/MIME和( )。

A.PGP

B.MIME

C.TCP

D.SSL/TLS

答案

参考答案:A

解析: 电子邮件是目前唯一一种可以跨越所有体系结构和供应商平台的分布式应用,为电子邮件提供身份认证和机密性服务的要求逐渐增强,目前广泛使用的方案有:PGP和 S/MIME。PGP(Pretty Good Privacy,相当好的私密性)不依赖于任何组织和权威的应用方案,提供了机密性和身份认证服务,可用于电子邮件和文件存储。适合个人和团体组织使用;S/MIME是因特网标准。MIME(多用途因特网邮件扩展)是一种因特网邮件标准化的格式,它允许以标准化的格式在电子邮件消息中包含文本、音频、图形、视频和类似的信息。S/MIME(安全MIME)在MIME的基础上添加了安全性元素。

阅读理解

根据短文内容,判断以下句子的正(T)误(F)。

     When we meet someone for the first time, we often would like to talk about ourselves. We just want

to show the best to others. But why not listen? Sometimes, listening is better than talking. Then how to be

a good listener? Here are a few suggestions:

      ◆Look at the speaker. It shows you are listening carefully. It's also a good way to "talk" to your friend

with your eyes.

      ◆Don't cut in. Give your friend enough time to say what she or he thinks. Don't stop your friend's words.

Even if you want to say something, you should wait till your friend finishes.

      ◆Try to understand. When you are listening, try to catch her or his feelings and ideas. It helps you know

your friend better. And your friend will feel better about you. She or he may think you are the right person to

talk with.

      ◆Show your ideas at the right time. "It's interesting." "What happened next?" … These are useful when

you are listening. And you can give advice when your friend asks for it.

      It's never too late to become a good listener. It can change your life and the lives of the people in your

life.

( )1. When we meet someone for the first time, we often would like to talk about others.

( )2. Looking at the speaker is impolite when you are listening.

( )3. Though you want to say something, you should not cut in at once.

( )4. To be a good listener, you should say nothing.

( )5. Listening is better than talking sometimes.

多项选择题