【单选题】
计算机操作系统的功能是____。
③
管理计算机资源,控制程序执行,方便用户使用计算机
【单选题】
计算机之所以能自动连续运算,是由于采用了____工作原理。
【单选题】
在PowerPoint中,如果希望在演示过程中终止幻灯片的放映,随时可按____键。
【单选题】
PowerPoint文档的扩展名为____。
【判断题】
In dehumanization, a human being is generally reduced into a lifeless object or an inanimate machine. It is roughly the opposite of personification.
【判断题】
Language variation is selected in a community above the level of conscious awareness when speakers are not consciously aware that they are making choices among variations.
【判断题】
Germanic, Latin, and French are the three major root sources that account for almost 90% of today’sEnglish vocabulary.
【判断题】
Formal English is much more difficult to attain since it is subject to more restraints and requirements.