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Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center. Smoking is considered dangerous to the health. Our tobacco-seller Mr. Johnson, therefore, always asks his 1 if they are very young, and whom the cigarettes are bought for. One day, a little girl whom he had never seen 2 walked boldly into his shop and demanded twenty cigarettes. She had the exact 3 of money in her hand and seemed very 4 of herself. Mr. Johnson was 5 surprised by her confident manner that he 6 to ask his usual question. 7 , he asked her what kind of cigarettes she wanted. The girl replied readily and 8 him the money. While he was giving her 9 cigarette, Mr. Johnson said laughingly that 10 she was so young she should 11 the packet in her pocket in 12 a policeman saw it. 13 , the little girl did not seem to find this very 14 . Without even smiling she took the packet and walked 15 the door. Suddenly she stopped, turned 16 and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller 17 what she was going to say. And at once, 18 a clear, firm voice, the girl 19 , "My dad is a policeman," and with 20 she walked quickly out of the shop.
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Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center. Smoking is considered dangerous to the health. Our tobacco-seller Mr. Johnson, therefore, always asks his 1 if they are very young, and whom the cigarettes are bought for. One day, a little girl whom he had never seen 2 walked boldly into his shop and demanded twenty cigarettes. She had the exact 3 of money in her hand and seemed very 4 of herself. Mr. Johnson was 5 surprised by her confident manner that he 6 to ask his usual question. 7 , he asked her what kind of cigarettes she wanted. The girl replied readily and 8 him the money. While he was giving her 9 cigarette, Mr. Johnson said laughingly that 10 she was so young she should 11 the packet in her pocket in 12 a policeman saw it. 13 , the little girl did not seem to find this very 14 . Without even smiling she took the packet and walked 15 the door. Suddenly she stopped, turned 16 and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller 17 what she was going to say. And at once, 18 a clear, firm voice, the girl 19 , "My dad is a policeman," and with 20 she walked quickly out of the shop.
Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center. Smoking is considered dangerous to the health. Our tobacco-seller Mr. Johnson, therefore, always asks his 1 if they are very young, and whom the cigarettes are bought for. One day, a little girl whom he had never seen 2 walked boldly into his shop and demanded twenty cigarettes. She had the exact 3 of money in her hand and seemed very 4 of herself. Mr. Johnson was 5 surprised by her confident manner that he 6 to ask his usual question. 7 , he asked her what kind of cigarettes she wanted. The girl replied readily and 8 him the money. While he was giving her 9 cigarette, Mr. Johnson said laughingly that 10 she was so young she should 11 the packet in her pocket in 12 a policeman saw it. 13 , the little girl did not seem to find this very 14 . Without even smiling she took the packet and walked 15 the door. Suddenly she stopped, turned 16 and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller 17 what she was going to say. And at once, 18 a clear, firm voice, the girl 19 , "My dad is a policeman," and with 20 she walked quickly out of the shop.
Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center. Smoking is considered dangerous to the health. Our tobacco-seller Mr. Johnson, therefore, always asks his 1 if they are very young, and whom the cigarettes are bought for. One day, a little girl whom he had never seen 2 walked boldly into his shop and demanded twenty cigarettes. She had the exact 3 of money in her hand and seemed very 4 of herself. Mr. Johnson was 5 surprised by her confident manner that he 6 to ask his usual question. 7 , he asked her what kind of cigarettes she wanted. The girl replied readily and 8 him the money. While he was giving her 9 cigarette, Mr. Johnson said laughingly that 10 she was so young she should 11 the packet in her pocket in 12 a policeman saw it. 13 , the little girl did not seem to find this very 14 . Without even smiling she took the packet and walked 15 the door. Suddenly she stopped, turned 16 and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller 17 what she was going to say. And at once, 18 a clear, firm voice, the girl 19 , "My dad is a policeman," and with 20 she walked quickly out of the shop.
某计算机采用段页式虚拟存储器，已知虚拟地址为32位，按字编址，每个段最多可以有1K页，每页为16KB，主存容量为64MB，回答以下问题： 某一个计算机系统采用虚拟页式存储管理方式，当前在处理器上执行的某一个进程的页表见下表，所有的数字均为十进制，每一项的起始编号是0，并且所有的地址均按字节编址，每页的大小为1024B。 某一进程的页表逻辑页号存在位引用位修改位页框号 01104 11113 2000— 31001 4000— 51015 1)将下列逻辑地址转换为物理地址，写出计算过程，对不能计算的说明其原因。 0793，1197，2099，3320，4188，5332 2)假设程序欲访问第2页，页面置换算法为改进的CLOCK算法，请问该淘汰哪页页表如何修改上述地址的转换结果是否改变变成多少
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