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问题 选择题

对右边漫画中开车人的行为评价正确的是

①没有做到换位思考，与人为善

②缺乏尊重他人的意识

③既违背了道德，又触犯了法律

④缺乏“己所不欲，勿施于人”的品格

A．①②③

B．①③④

C．①②④

D．②③④

答案

答案：C

题目分析：开车人的行为缺少公德意识，不尊重他人，给他人带来不便，也缺乏“己所不欲，勿施于人”的品格，这种行为是违背道德要求的，但没有严重到触犯法律的地步，所以③是错误的，其他都正确，故选C。

问答题

如图， A、B置于光滑水平面上，在水平力F作用下共同运动，A是否受摩擦力？如有，摩擦力的方向如何？
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单项选择题

The presentation layer is concerned with the (1) and semantics of the information exchanged between two systems. The processes in two systems are usually exchanging information in the form of character(2), numbers, and so on. The information should be changed to bit (3) before being transmitted. Because different computers use different encoding systems, the presentation layer is responsible for(4) between these different encoding methods. The presentation layer at the sender changes the information from its sender-dependent format into a common format. The presentation layer at the receiving machine changes the common format into its(5)-dependent format.

空白（2）处应选择（）

A.numbers

B.functions

C.strings

D.codes
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