听力原文:W: Hi, Li Hua. What are you doing this semester?
M: Oh, I'm still learning English. I have to do one more semester before I can start my real studies at the university.
W: You make it sound like prison. How are the classes?
M: They're all right, I guess. I don't know. It seems like they never tell us what we really need to know.
W: What do you mean?
M: Look, when I study mathematics, for instance, we start with definitions. Then we have problems and some equations and processes to learn. You go to class, you keep up, you do the homework, and you know it. You pass exams. But English class is quite different. First of all, they don't want to teach us all the rules. They tell us one rule. Fine. We use that rule, but soon it won't work. It's more complicated or there are a lot of exceptions or something. Sometimes I think the teachers don't know the rules either.
W: But you don't learn a language from the rules, anyway. You have to use it.
M: Yes. That's something else they tell us. But why can't we just go to class, study, and do our homework? That's what I know how to do.
W: Look at this way, can you learn to play soccer by sitting at home and reading about soccer?
M: No, of course not. Not if you want to play well.
W: But why not? You could understand the rules of strategy, the duties of each position, and all the special situations. You have to feel the ball, practice kicking it hundreds of times, practice running down the field, moving toward the goal, and centering the ball. No one can learn that by passively studying. Learning a language is more like learning to play soccer than learning mathematics. You have to ask a lot of questions and hear how the answers sound. You have to listen to how people indicate the important part of what they're saying. And then of course endless practice on all the details spelling, "s" endings, articles.., just like practice in simple dribbling and kicking.
M: But if it's a skill like soccer, not a science, why do they teach it in schools and universities, and give you diplomas and grades?
W: That's a good question. It is confusing, but languages are important and people do want to learn them. But the main thing is to practice the language a lot, just like soccer.
M: Maybe I'll join a soccer team and practice English and soccer at the same time. I can talk with people before and after the practice.
W: That's a good idea.
(26)
A.The rules in English language.
B.Learning English and mathematics.
C.The approach to learning English.
D.Playing Soccer needs a lot of exercise.
第1题
● 虚拟存储系统中的页表有快表和慢表之分,下面关于页表的叙述中正确的是 (18) 。
(18)
A. 快表与慢表都存储在主存中,但快表比慢表容量小
B. 快表采用了优化的搜索算法,因此比慢表的查找速度快
C. 快表比慢表的命中率高,因此快表可以得到更多的搜索结果
D. 快表采用快速存储器件组成,按照查找内容访问,因此比慢表查找速度快
第2题
● 虚拟存储系统中的页表有快表和慢表之分,下面关于页表的叙述中正确的是 (18) 。
(18)
A. 快表与慢表都存储在主存中,但快表比慢表容量小
B. 快表采用了优化的搜索算法,因此比慢表的查找速度快
C. 快表比慢表的命中率高,因此快表可以得到更多的搜索结果
D. 快表采用快速存储器件组成,按照查找内容访问,因此比慢表查找速度快
第3题
虚拟存储器中的页表有快表和慢表之分,下面关于页表的叙述中正确的是()。
A.快表与慢表都存储在主存中,但快表比慢表容量小
B.快表采用了优化的搜索算法,因此查找速度快
C.快表比慢表的命中率高,因此快表可以得到更多的搜索结果
D.快表采用快速存储器件组成,按照查找内容访问,因此比慢表查找速度快
第4题
A.快表与慢表都存储在主存中,但快表比慢表容量小
B.快表采用了优化的搜索算法,因此比慢表的查找速度快
C.快表比慢表的命中率高,因此快表可以得到更多的搜索结果
D.快表采用快速存储器件组成,按照查找内容访问,因此比慢表查找速度快
第5题
A.快表和慢表都存储在主存中,但快表比慢表容量小
B.快表采用了优化搜索算法,因此查找速度快
C.快表比慢表的命中率高,因此快表可以得到更多的搜索结果
D.快表采用快速存储器器件组成,按照查找内容访问,因此比慢表查找速度快
第7题
下列关于快表的叙述中,哪些是正确的?()
Ⅰ. 快表的内容是页表的子集
Ⅱ. 对快表的查找是按内容并行进行的
Ⅲ. 当切换进程时,要刷新快表
A) 仅Ⅰ和Ⅱ
B) 仅Ⅱ和Ⅲ
C) 仅Ⅰ和Ⅲ
D) 都正确
第8题
下列关于页式存储管理方案的叙述中,哪一个是错误的?
A.64位UltraSPARC系统通常采用的是反置页表
B.快表中记录了页号与内存块号的对应关系
C.进行地址转换时,如果快表不命中则继续查页表
D.快表存放在寄存器组中
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