两千多年前的《诗经》提出“夙夜在公”，西汉的贾谊提出“国而忘家，公而忘私”，宋代的范

Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up (1) at the customer premise over slow (2) ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet (3) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (4) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (5) can connect to the Internet through the same connection.

（5）应填入（）

A．cables

B．hosts

C．servers

D．modems

继发性三叉神经痛与原发性三叉神经痛主要鉴别要点是（）.

A.触发点的存在

B.有无面部痛觉减退和角膜反射减退

C.合并有角膜炎

D.伴有牙齿疾患

E.疼痛范围小

某学校学生的平均年龄为20岁，标准差为3岁；该校教师的平均年龄为38岁，标准差为3岁。比较该校学生年龄和教师年龄的离散程度，则( )。

A．学生年龄和教师年龄的离散程度相同

B．教师年龄的离散程度大一些

C．教师年龄的离散程度是学生年龄离散程度的1.9倍

D．学生年龄的离散程度大一些

下面关系函数依赖的传述中，不正确的是______。

A．若XY——＞Z，则X——＞Z，Y——＞Z

B．若X——＞Y，Y——＞Z，则X——＞YZ

C．若X——＞Y，Z包含Y，则X——＞Z

D．若X——＞Y，Y——＞Z，则X——＞Z

脊神经有（）.

A、30对

B、31对

C、32对