Mr. Black, as well as his wife and children, ________ invited to the dinner party last night.
A:was
B:were
C:has been
D:have been
荀子曾说到:“天有常道矣,地有常数矣,君子有常体矣。”这句话包含的哲学道理是( )
满足方程组2x+y=m+2x-y=m的x,y的值的和等于2,求x,y,m的值.
如图所示,点A表示____ ,点B表示____ ,点C表示____ ,点D表示____ .
下列句中划线词语的活用类型与例句一样的一项是( )例句:襟三江而带五湖