The meanings of word are varied from different aspects. (who) prefer to define the word "word " as "a form that can function along in a sentence"; while (who) would like to say the word "word " as " a unit of meaning"
【简答题】经过点A〔-1 ,4〕 且斜率是 的直线方程为 ( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> A. x-2y+9=0 B. x-2y-9=0 C. x+2y+9=0 D. x+2y-9=0A. A. x-2y+9=0