题目内容

[2015]假定主存地址为32位，按字节编址，主存和cache之间采用直接相联块射方式，主存块大小为4个字，每个字32位，采用写回的方式，则能存放4K字数据的cache的总容量至少是______位

A. 146K
B. 147K
C. 148K
D. 158K

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[2014]采用指令cache与数据cache分离的主要目的是______

A. 降低cache的缺失损失
B. 提高cache的命中率
C. 降低CPU平均访存时间
D. 减少指令流水线资源冲突

Unit 5I.Complete the sentences with the proper form of the given words.uneasy ; work; focus; party; due; wisely1.Try to find a learning method that ___ for you.2.He felt_ before the final exam.3.He is _ back soon.4.__ on for four hours at the Christmas party made him very tired.5.It is hard for him to after diving for 5 hours without a rest.6.It is important for students to use time.

II.Complete the sentences with the proper form of the given words.1.He came here __ （study)English.2.Lucy went to the train _ (meet) her friend from London.3.I hurried to Professor Wang’s house only _ (find) he was out.4.He returned home _ (get）the materials he left on the desk.5._( catch) the train, you must get up at six o’clock.6.I’m sorry _( hear) that.

III.Translation1.重要的事情需要提前计划。2.在学习和娱乐之间要保持平衡。3.你最好控制一下上网聊天的时间，4.时间管理很重要。