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问题 多项选择题

要将一个异步的以太网分组数据流通过SDH网络进行传送通常需要进行一系列基于标准的封装和映射，下面所列的哪些技术是目前贝尔OMSN（和TransLAN）中采用的（）

A.LCAS–链路容量调整机制

B.VCAT-虚级联

C.VRRP–虚拟路由冗余协议

D.HDLC–高级数字链路控制协议

E.GFP–通用成帧规程

答案

参考答案：A, B, E

单项选择题

输尿管中段是指（）

A.输尿管与肾盂交界处

B.自肾盂输尿管连接部到跨越髂动脉处

C.髂动脉到膀胱壁

D.膀胱壁内

E.以上都不是
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阅读理解
Reading comprehension.
                                                ASK LASKAS
YOU'VE GOT QUESTIONS. SHE'S GOT ANSWERS
   Q
My children go to a primary school where they are not allowed to play football
in the playground for fear that a child might be hurt. Besides, now the school
says there must be no homework because the local secondary school can't
keep up with the amount of homework given in the primary school. Can the school do this?
Puzzled Dad
   A
It can't if enough parents do something about it. It is not just schools. We live in
a society which wishes to get rid of risk. However, schools should have a little
common sense and courage. Children need risk if they arc to grow up self-sufficient
and confident. They need homework, too, if they are to fulfill their academic potential.
Complain, loudly.
   Q
I have a beautiful teenage daughter who spends an hour making up her face in
front of the mirror every day. I tell her to go easy. She just gets mad or bursts
into tears. How can I make her understand she's beautiful the way she is.
Plain Mom
   A
          		You can't. Your daughter is at the age when she's trying to look beautiful, trying
on new masks. And if her friends all dress up as she docs, you're in for an extra
hard time. Support her and tell her she's beautiful-even if she looks ridiculous for
now. Then invite her to join you for a day at a spa (健康美容中心). Let her try
various looks until she's comfortable in her own skin.
1. Why are the children not allowed to play football in the playground?
A. The school is afraid that children might be injured.
B. The school is not sensible and confident.
C. The children don't have enough time to do homework.
D. The children may fail to fulfill their academic potential.
2. What disturbs Plain Mom is that her daughter ______.
A. becomes mad
B. cries a lot
C. spends much rime before the mirror
D. is not beautiful enough
3. The solution to Plain Mom's problem is to ______.
A. make her daughter look less ridiculous
B. let her daughter dress up like her friends
C. make her daughter go to a spa every week
D. let her daughter feel herself what beauty is
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