A:∀x∈R,x2﹣x<0
B:∀x∈R,x2﹣x≤0
C:∃x∈R,x2﹣x<0
D:∃x∈R,x2﹣x≥0
—What language does your QQ friend speak?
—She _______ speak English and a little Chinese, but now she _______ with me in Chinese.
从孔子提出“仁”到孟子主张“仁政”,再到荀子强调“仁义”,儒家思想的早期发展始终贯穿的一条主线是( )
把一根燃着的木条,分别伸入装有呼出气体和普通空气的集气瓶内,观察到木条在空气瓶内燃烧较旺,由此说明( )