本课配套习题挑战模式1/5

返回课程
单选题
难度系数:

1.


A:

a>-3

B:

-6<a<3

C:

-3<a<6

D:

以上都不对

  • 提示1PHA+5pys6aKY6aaW5YWI6KaB6Kej6L+Z5Liq5YWz5LqOeOOAgXnnmoTmlrnnqIvnu4TvvIzmsYLlh7rmlrnnqIvnu4TnmoTop6M8L3A+
  • 提示2PHA+5qC55o2u6Kej6YO95piv5q2j5pWw77yM5Y+v5Lul5b6X5Yiw5LiA5Liq5YWz5LqOYeeahOS4jeetieW8j++8jOeEtuWQjuaxguWHumHnmoTojIPlm7QuPC9wPg==