从网络的交换角度可以把计算机网络分为（）
A.电路交换
B.报文交换
C.分组交换
D.混合交换
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
以下关于人力资源需求预测方法的说法，不正确的是（）
A.工作研究是确定人力资源需求最古老最有效的方法
B.设备看管定额定员法是按劳动效率定员方法的一种特殊形式
C.比例定员法的对象是同岗位工作任务量相关的代表性标志物
D.计算机模拟法是进行人力资源需求预测诸方法中比较简单的方法
某学习小组对教材实验“在200mL烧杯中放人20 g蔗糖(C12H22O11)，加入适量水，搅拌均匀，然后再加入15 mL质量分数为98％浓硫酸，迅速搅拌”进行如下探究。
阅读理解。
We may all have had the embarrassing moment: Getting half-way through a story only to realize that we've
told this exact tale before, to the same person. Why do we make such memory mistakes?
According to research published in Psychological Science, it may have to do with the way our brains
process different types of memory.
Researchers Nigel Gopie, of the Rotman Research Institute in Toronto, and Colin Macleod, of the University
of Waterloo, divided memory into two kinds. The first was source memory, or the ability to keep track of
where information is coming from. The second was destination memory, or the ability to recall who we have
given information to.
They found that source memory functions better than destination memory, in part because of the direction
in which that information is travelling.
To study the differences between source and destination memory, the researchers did an experiment on 60
university students, according to a New York Times report. The students were asked to associate (联想) 50
random (随意的) facts with the faces of 50 famous people. Half of the students "told" each fact to one of the
faces, reading it aloud when the celebrity's (名人的) picture appeared on a computer screen. The other half
read each fact silently and saw a different celebrity picture afterward.
When later asked to recall which facts went with which faces, the students who were giving information
out (destination memory) scored about 16 percent lower on memory performance compared with the students
receiving information (source memory).
The researchers concluded that out-going information was less associated with its environmental context
(背景) that is, the person-than was incoming information.
This makes sense given what is known about attention. A person who is giving information, even little facts,
will devote some mental resources to thinking about what is being said. Because our attention is limited, we give
less attention to the person we are giving information to.
After a second experiment with another group of 40 students, the researchers concluded that self-focus is
another factor that undermines destination memory.
They asked half the students to continue giving out random information, while the other told things about
themselves. This time around, those who were talking about themselves did 15 percent worse than those giving
random information.
"When you start telling these personal facts compared with non-self facts, suddenly destination memory
goes down more, suggesting that it is the self-focus component (成分) that's reducing the memory," Gopie
told Live Science.
1. The point of this article is to _____. [ ]
A. give advice on how to improve memory
B. say what causes the memory to worsen
C. explain why we repeat stories to those we've already told them to
D. discuss the differences between source and destination memory
2. What can we learn from the article? [ ]
A. Source memory helps us remember who we have told the information to.
B. One's limited attention is one of the reasons why those reading aloud to the celebrity's pictures perform
worse on the memory test.
C. Silent reading is a better way to remember information than reading aloud.
D. It tends to be more difficult for people to link incoming information with its environmental context than
outgoing information.
3. The underlined word "undermines" probably means _____. [ ]
A. weakens
B. benefits
C. explains
D. supports
4. What did the scientists conclude from the second experiment? [ ]
A. Destination memory is weaker than source memory.
B. Focusing attention on oneself leads to relatively poor source memory performance.
C. Associating personal experience with information helps people memorize better.
D. Self-focus is responsible for giving information twice or more to the same person.
在美国，有关规范房地产经纪人的法律主要有：( )。
A．经纪人法规
B．一般代理法规
C．契约法规
D．专业伦理法则
E．执照法
在TCP/IP协议中，TCP协议提供可靠的连接服务，采用三次握手建立一个连接。请简述三次握手的过程。