问题 单项选择题

下列关于RPR技术的描述中,错误的是()

A.可以对不同的业务数据分配不同的优先级

B.能够在100ms内隔离出现故障的节点和光纤段

C.内环和外环都可以用于传输数据分组和控制分组

D.是一种用于直接在光纤上高效传输IP分组的传输技术

答案

参考答案:B

解析:

RPR采用自愈环的设计思想,能够在50ms的时间内,隔离出现故障的结点和光纤段。

名词解释
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阅读理解。

     The $11 billion self-help industry is built on the idea that you should turn negative thoughts like "I

never do anything right" into positive ones like "I can succeed." But was positive thinking advocate

Norman Vincent Peale right? Is there power in positive thinking?

     Researchers in Canada just published a study in the journal Psychological Science that says trying

to get people to think more positively can actually have the opposite effect: it can simply highlight how

unhappy they are.

     The study's authors, Joanne Wood and John Lee of the University of Waterloo and Elaine Perunovic

of the University of New Brunswick, begin by citing(引用) older research showing that when people

get feedback which they believe is overly positive, they actually feel worse, not better. If you tell your

depressed friend that he has the potential of an Einstein, you're just underlining his faults. In one 1990s

experiment, a team including psychologist Joel Cooper of Princeton asked participants to write essays

opposing funding for the disabled. When the essayists were later praised for their sympathy, they felt

even worse about what they had written.

     In this experiment, Wood, Lee and Perunovic measured 68 students' self-esteem. The participants

were then asked to write down their thoughts and feelings for four minutes. Every 15 seconds, one

group of students heard a bell. When it rang, they were supposed to tell themselves, "I am lovable."

     Those with low self-esteem didn't feel better after the forced self-approval. In fact, their moods

turned significantly darker than those of members of the control group, who weren't urged to think

positive thoughts.

    The paper provides support for newer forms of psychotherapy (心理治疗) that urge people to

accept their negative thoughts and feelings rather than fight them. In the fighting, we not only often

fail but can make things worse. Meditation (静思) techniques, in contrast, can teach people to put

their shortcomings into a larger, more realistic perspective. Call it the power of negative thinking.

1. What do we learn from the first paragraph about the self-help industry?

A. It was established by Norman Vincent Peale.

B. It is based on the concept of positive thinking.

C. It is a highly profitable industry.

D. It has brought positive results.

2. What is the finding of the Canadian researchers?

A. Encouraging positive thinking may do more harm than good.

B. The power of positive thinking is limited.

C. Unhappy people cannot think positively.

D. There can be no simple therapy for psychological problems.

3. What does the author mean by "…  you're just underlining his faults"?

A. You are pointing out the errors he has made.

B. You are not taking his mistakes seriously enough.

C. You are trying to make him feel better about his faults.

D. You are emphasizing the fact that he is not intelligent.

4. What do we learn from the experiment of Wood, Lee and Perunovic?

A. It is important for people to continually increase their self-esteem.

B. Forcing a person to think positive thoughts may lower their self-esteem.

C. Self-approval can bring a positive change to one's mood.

D. People with low self-esteem seldom write down their true feelings