下列各句中标点符号完全正确的一项是 [ ] A．克林顿意欲聘牛津校长一职，但因受

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.

（4）应填入（）

A．FDDI

B．HDSL

C．ADSL

D．CDMA

对下列现象的解释或者结论错误的是（　　）

A．“花香四溢”-------分子在不断运动

B．在钢铁制品表面涂油漆--------可防止钢铁生锈

C．活性炭可以净化水-----活性炭能吸咐杂质

D．20升酒精和20升水混合，体积小于40升-----分子的大小发生了变化

Could you tell me the way ________ the library? [ ]

A. in     

B. at     

C. on     

D. to

我国行政法规的发布形式是（）

A． * * 令

B． * * 令

C．新闻报导

D．中 * * 文件

在力学理论建立的过程中，有许多伟大的科学家做出了贡献。关于科学家和他们的贡献，下列说法错误的是:

A 牛顿最早指出力不是维持物体运动的原因

B 笛卡尔对牛顿第一定律的建立做出了贡献

C 伽利略在研究自由落体运动规律过程中, 建立了平均速度、瞬时速度以及加速度等概念

D 伽利略运用"归谬法"否定了亚里士多德关于重的物体下落快,轻的物体下落慢的论断