福建省三明市属亚热带季风气候,最主要的气象灾害是( )
A:地震
B:海啸
C:洪涝
D:沙尘暴
下边选项直接反映了地球大气污染严重的是( )
如图,BC⊥AE于点C,CD∥AB,∠B=55°,则∠1等于( )
对动物行为的叙述,最合理的是( )
-- Would you like to play football after school?
-- ________. I have a lot of homework to do.
已知函数f(x)=lnx+2x,则不等式f(x2﹣3)<2的解集为____ .