The author uses the term "presymbolic language" to mean probably ______.
A. language used in accurate reports
B. language that lacks an elaborate grammatical structure
C. language that our ancestors use prehistorically
D. language that is of little informative value
查看答案
The phrase "older and deeper functions" in the first sentence refers to ______.
A. the grammatical structure of language
B. the expression of emotions through sound
C. the transmission of information through written language
D. the purely informative part of language
原材料和燃料供应方案比选的内容不包括( )。
A. 采购的可靠性
B. 价格的经济性及可能的风险
C. 采购的特殊性
D. 经过比选，提出推荐方案
Who was the first English king to bring all Ireland under English control'
A. Henry Ⅱ.
B. Henry Ⅲ.
C. Henry ⅥⅡ.
D. James Ⅱ.
下面关于操作系统的叙述中，正确的是
A. 操作系统是计算机软件系统中的核心软件
B. 操作系统属于应用软件
C. Windows是PC唯一的操作系统
D. 操作系统的5大功能是：启动、打印、显示、文件存取和关机
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