六千多万年前形成的山脉称为“____”。
函数f(x)=ax+bx+c2的图像如图所示,则下列结论成立的是
颁布中国第一部社会主义类型宪法的权力机关是( )
She ____ ____ ____ the driving test again.
—We mainly ________ buyers from Europe and our products are well received.