If you want to buy an expensive camera, we have several models for you ________.
法国作家罗曼罗兰曾说:“要散布阳光到别人心里,先得自己心里有阳光。”下面对格言的理解,错误的一项是( )
方程2x2-3x+1=0经过配方可化为x+a2=b的形式,则正确的结果是( )