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简答题埃赫那吞改革的主要内容和失败的原因。

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与克拉维酸钾合用后，不被β-内酰胺酶破坏，而达到增效作用，且可口服的药物是（）.

A. 磺胺甲噁唑
B. 亚胺培南
C. 氨曲南
D. 阿莫西林
E. 青霉素

简答题古埃及在科学方面的成就。

某文件系统采用多级索引结构，若磁盘块的大小为512字节，每个块号需占3字节，那么根索引采用一级索引时的文件最大长度为 (5) K字节；采用二级索引时的文件最大长度为 (6) K字节。（5）处填（）。

A. 85
B. 170
C. 512
D. 1024

[听力原文]11-15Good evening. Welcome to the first meeting of our spring cycling season. It’s a pleasure to see so many new faces here. I certainly hope that most of you will soon feel right at home with our group.The state of New Jercy offers enough opportunities for bicyclists of all abilities. Beginners will find the shore and area suitable for their needs while expert riders will meet a challenge to their skill and energy.We organize tours to a variety of places nearly every weekend. Next Saturday’ s tour will be an easy one. Interested cyclists should meet at eight a.m. in the parking area. The minimum time for this tour is about six hours. You can pick up a map of Saturday’s tour at the information table before you leave this evening. Where should the cyclists interested in next Saturday’s tour meetThey should meet in（）at 8 a. m.