问题 单项选择题

在CPU和主存间设置cache存储器主要是为了 (14) 。若使用基于数据内容进行访问的存储设备作为cache时,能更快决定是否命中。这种地址映射方法称为 (15) 映射。CPU向cache执行写操作时,可以同时写回主存储器或者仅当cache中该数据被淘汰时才写回主存储器,前者称为 (16) ,而后者称为 (17) 。若cache的存取速度是主存存取速度的10倍,且命中率可达到0.8,则CPU对该存储系统的平均存取周期为 (18) T(T为主有的存取周期)。

A.扩充主存容量
B.解决CPU和主存的速度匹配
C.提高可靠性
D.增加CPU访问的并行度

答案

参考答案:B

阅读理解

信息匹配(共5小题,每小题2分,满分10分)

下面是有关植物和园艺方面的详细信息,请阅读下面相关信息,并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。

56. (Part One) Once your plants are growing you will need to keep them happy. How do you do this and what sorts of tools will you need? Plants need water and food, but when and in what sort of quantities? This module explains the cultivation techniques necessary to keep your plants in fine fettle. There are simple basic steps you can take to ensure you cut the right stem, at the right time, in the right place.

57. (Part two) Plants lose water through their leaves all the time. It is essential to ensure there is enough to replenish the roots, otherwise they will die. In warm weather water is lost from the soil by evaporation, so watering will need to be done more often.

58. (Part Three) To keep them growing healthily, plants absorb through their roots about 30 different nutrients and minerals dissolved in water.

59. (Part Four) Pruning is basically cutting off carefully selected parts of a plant to restrict its size, persuade it to grow in a particular shape, encouraging more fruit, flowers or stems, or to remove dead or diseased material. But pruning is neither difficult nor complicated; in fact a lot of it is applying common sense! You just have to follow a few guidelines and check in a book what kind of pruning the particular plant needs. The removal of dead, diseased, broken, crossing and crowded branches is often sufficient for many plants.

60. (Part Five) A spade is your basic digging implement; use it to make holes and to dig sandy or loamy soil. Fork is perfect for digging soil that’s stodgy, such as clay, or full of stones; moving and spreading organic matter; and breaking down clods of soil…

请阅读以下相关主题,然后匹配和其相关的章节:

It tells us how to take care of our garden to make the plants and flowers fairly good.

It tells us that in order to grow well, plants also need all kinds of nutrition, and so how to feed the plants is also important.

That part tells gardeners how to do pruning that can remove the unneeded parts of many plants.

It tells the importance of watering in gardening, especially in hot summer seasons.

That part introduces the tools and different functions of various tools you may use in gardening.

This section presents where you can buy good seeds and it also offers the regular price for you.

有关章节                          主题内容  

56. Part One                       

A.how to take care of garden

57. Part two

B.how to feed the plants

58. Part Three

C.how to prune

59. Part Four

D.the importance of watering60. Part Five   E. introduces different functions of tools

F. where you can buy good seeds

阅读理解

John and Bobby joined a wholesale company together just after graduation from college the same year. Both worked very hard. After several years, however, the boss promoted Bobby to the position of manager but John remained an ordinary employee. John could not take it any more, tendered his resignation to the boss and complained the boss did not know how to delegate and did not value hard-working staff, but only promoted those who flattered him.

The boss knew that John worked very hard for the years. He thought a moment and said, “Thank you for your criticism, but I have a request. I hope you will do one more thing for our company before you leave. Perhaps you will change your decision and take back your resignation.”

John agreed. The boss asked him to go and find out anyone selling watermelon in the market. John went and returned soon. He said he had found out a man selling watermelon. The boss asked how much per kg. John shook his head and went back to the market to ask and returned to inform the boss $1.2 per kg.

Boss told John to wait a second, and he called Bobby to come to his office. He asked Bobby to go and find anyone selling watermelon in the market. Bobby went, returned and said, “Boss, only one person selling watermelon. $1.2 per kg, $10 for 10kg, he has inventory (清单) of 340 melons. On the table 58 melons, bought from the South two days ago, they are fresh and red, good quality.”

John was very impressed and realized the difference between himself and Bobby. He decided not to resign but to learn from Bobby.

Chances exist in the daily details. For the same matter, a more successful person sees more and farther so that he can find out an opportunity and catch it to realize his aim. If a person sees one year ahead, while another sees only tomorrow. Then the difference between a year and a day is 365 times!

小题1:Why did John decide to hand in his resignation to the boss?

A.Because he couldn’t stand being an ordinary employee.

B.Because Bobby would take John’s former position.

C.Because the boss was not flattered by his hard work.

D.Because Bobby instead of him was promoted.小题2:What did the boss ask John to do?

A.To go to market and find out whether there is someone selling watermelons.

B.To make a complete marketing research on the various prices of watermelons.

C.To search for much information about the effective ways to sell watermelons.

D.To make a comparison on the prices of different types of watermelons.小题3: What sort of following information about watermelons was NOT brought by Bobby?

A.The price.

B.The quality.

C.The quantity.

D.The weight.小题4: From the difference of John and Bobby, we may infer that a more successful person is more _____.

A. alert, sensitive and passionate

B. observant, thoughtful and exploratory

C. considerate, modest and satisfied

confident, noble and tolerant