椭圆C: 的准线方程是

选择正确的答案

遥知不是雪，为有暗香来。 这句诗是描写哪种花的?   (      )

二次函数y=ax²+bx+c，自变量x与函数y的对应值如表：

x	…	﹣5	﹣4	﹣3	﹣2	﹣1	0	…
y	…	4	0	﹣2	﹣2	0	4	…

下列说法正确的是（   ）

计算
（1）$\sqrt{48}÷\sqrt{3}-\sqrt{\frac{1}{2}}\times \sqrt{12}+(\sqrt{3}+\sqrt{2}{)}^2$;（2）$(1-\sqrt{2}{)}^0+\sqrt{8}-2\sin {45}^{°}-(\frac{2}{3}{)}^{-1}$

______housing prices are going up madly, it is almost certain that the local government focuses not on improving people’s life but on trying to earn money by selling state land.