第1题
e sought to escape other parts of their lives through work. Our parents and grandparents worked very hard, but theirs was more of a physical work. Ours has more stress in it, especially in these days of rising competition and shrinking companies. The companies are getting smaller and smaller because of bleak economic conditions and employees fear for their jobs—so they work longer hours. We seem to be more in the fast lane than ever before.
第2题
3 years of study, they can speak _1_ understand a _2_ English. However, because they are not living in an English _3_ country, they often start to forget some of their English. They might remember the grammar, but they soon _4_ the vocabulary; they might read an English newspaper, but they don't ever speak English. For example, how can a person in Tokyo _5_ English when he does not hear or speak English every day? How can he _ 6_ to learn English ? There are many things he _7_ do if he really wants to improve.
Of course, most people should be able to learn to speak English __8__ . But it takes a lot of practice, many years, _9_ fact. If the student can afford it, he might __10_ a vacation in an English speaking country.
1. A. and B. to C. for D. as
2. A. few B. little C. many D. much
3. A. spoken B. speak C. speaking D. speaks
4. A. remember B. forget C. take D. do
5 A. master B. study C. learn D. research
6. A. stop B. halt C. begin D. continue
7. A. will B. shall C. should D. may
8. A. fast B. slowly C. fluently D. quickly
9. A. as B. in C. at D. with
10. A. take B. took C. taken D. taking
第7题
当一个网络需要划分出4个子网,则子网号所占的比特数最少是()。
A、2比特
B、3比特
C、 4比特
D、8比特
第8题
对堡垒主机叙述正确的是()。
A、堡垒主机是内部主机访问Internet的代理
B、堡垒主机部署在内部网络中
C、 堡垒主机部署在Internet中
D、堡垒主机对Internet中的主机是不可见的
第9题
源主机与目的主机直接的端到端流量控制通过以下哪个机制实现()。
A、拥塞窗口
B、数据窗口
C、 通知窗口
D、三次握手
第10题
组播树的概念描述正确的是()。
A、组播树是有参与组播的所有主机节点构成的
B、组播树有参与组播的所有主播路由器和主机节点构成
C、 组播树从源站到组播群组的所有成员联通且不构成环路
D、对每个组播群组,每个数据报源的组播树都是相同的。
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