挑战习题
1/5单选题
难度:

1.若式子在实数范围内有意义,则x的取值范围是(  )
A x<2
B x≤2
C x>2
D x≥2
提示1:
IOagueaNruS6jOasoeagueW8j+S4reeahOiiq+W8gOaWueaVsOW/hemhu+aYr+mdnui0n+aVsO+8jOWNs+WPr+axguinow==
正确答案:RA==
PGRpdj7op6PvvJrmoLnmja7popjmhI/lvpfvvJp4LTLiiaUw77yM6Kej5b6X77yaeOKJpTI8L2Rpdj4=