问题
单项选择题
在CPU与主存之间设置高速缓冲存储器Cache，其目的是______
A．扩大主存的存储容量
B．提高CPU对主存访问效率
C．既扩大主存容量又提高存取速度
D．提高外存储器的存取速度
答案
参考答案：B
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在CPU与主存之间设置高速缓冲存储器Cache，其目的是______
A．扩大主存的存储容量
B．提高CPU对主存访问效率
C．既扩大主存容量又提高存取速度
D．提高外存储器的存取速度
参考答案：B
A boy lost his arms in an accident and his father lost his life . Since then , he had to____the arms of his younger brother. Except for writing with his toes(脚趾头),he could hardly do ____in his life . As the two brothers grew up together, they had lots of ______ and they often argued(争吵). Then one day , his younger brother ____ him. So he was very sad and didn’t know ____ to do. A girl lost her hands because of a fire . Though her elder sister wanted to ____ her , she decided to be completely independent(独立的). At school , she always study hard. Once she wrote the following in her composition, “I am____ . Though I lost my hands, I still have legs. Though my wings are broken, my heart can still fly.” One day, the boy and the girl were both invited____ a television interview program. They both were asked to write something on a piece of paper with their toes. The boy wrote “ My younger brother’s arms are my arms”______the girl wrote “Broken wings(翅膀), ______heart .”
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