某文件系统中设定的物理块大小为512字节。假设一个文件控制块有48个字节，符号目录项占8字节，其中文件名占6字节，文件号占2字节；基本目录项占40字节。有一个目录文件包含256个目录项。
在进行目录项分解后，需要( )个物理块存放符号文件。
A．3
B．4
C．5
D．6
参考答案：B
解析： 在进行目录项分解后，256个目录项，每个符号目录占8字节，因此8256=2048字节，同时，每个物理块大小为512字节，因此，进行目录项分解后，需要存放符号文件的物理块大小为2048÷512=4。
下面是一片摘自《上海中学生英文报》网站的报道。请仔细阅读该报道按信息表中项目要求在答卷上的信息表中填写信息。 Depending on yourself Growing up is not always easy .When we face difficulties ,a spirit of depending yourself is more useful than crying for help .That ‘s what Hong Zhanhui’s story of growing from boy to man with family hardship tells us . Hong was born in 1982 in a poor family in Xihua county (县),henan Province .When he was only 11,his father became badly ill and one day he came back with an unwanted baby girl .A year later Hong’s mother left home . She no longer wanted to live such a poor life and face her sick hus-band .So everything hard fell on to the young boy’s shoulders :to take care of his father and the sister Chenchen ,and to go on to study . Although his life was hard ,Hong didn’t go away from hisfather and sister .He worked in part-time jobs to feed his family .He climbed tall trees to get birds’eggs for his sister .He walked two hours at weekends to the market to buy different things to sell around his school .A few years later ,he studied at a sollege .To take care of Chenchen ,he worked hard to rent a room near his college for her ,and send her to school . After Hong’s story went public ,he became a hero in people’s eyes .But Hong refused offers-from others .He sard he felt encouraged by kind offers ,but he could depend on his own work . Though his hard life ,he has grown up from boy to man . From :Shanghai Middle School English Online Information Card
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