问题 多项选择题

下面关于BFd会话的建立方式描述正确的是()

A.BFD会话的建立只有通过动态建立BFD会话

B.静态配置BFD会话是指通过命令行手工配置BFD会话参数,包括了配置本地标识符和远端标识符,然后手工下发BFD会话建立请求

C.动态建立BFD会话时,动态分配本地标识符

D.系统通过划分标识符区域的方式来区分静态BFD会话和动态BFD会话

答案

参考答案:B, C, D

阅读理解

According to a recent survey, British teenagers are not in good health because they don’t have enough time for sleep. They don’t sleep well, either. They are often disturbed(打扰) by electronic gadgets(器具,装置) in their bedrooms. We call such kind of sleep “junk sleep”.

We did a survey among 1,000 students aged 12 to 16, and we found out that 30 percent of them slept for only 4 to 7 hours a day. Nearly a quarter said they fell asleep while they were watching TV, listening to music or using other electronic gadgets.’

Nowadays, almost all the teenagers have a phone, music system or TV in his or her bedroom. Almost 20 percent of the teenager boys said the quality of their sleep were not good. It was affected by leaving their TVs or computers on. The survey also found out that 40 percent of young people felt tired every day. What’s more, the girls aged 15 to 16 felt the worst among them.

“Teenagers need to realize the importance of sleeping well. If they sleep well, they will be able to study hard and perform well at school. I am shocked to know that so few teenagers have noticed the close connection between sleep and schoolwork,” said Dr Chris.

小题1:What disturbs British teenager in their bedrooms?

A. Sleep.           B. Electronic gadgets.        C. Schoolwork.

小题2:According to the result of the survey, how long did 30 percent of students sleep a day?

A. 3 to 7 hours.      B. 4 to 7 minutes.            C. 4 to 7 hours.

小题3:The word “ quality” means “      ” in Chinese.

A. 数量            B. 质量                    C. 时间

小题4:Among the students,                felt the worst.

A. the girls aged 13.      B. the girls aged 15.       C. the girls aged 17.

小题5:What does the passage talk about ?

A. Junk food.           B. Junk sleep.             C. Teenagers.

问答题 简答题