集合M={x|lgx>0},N={x|x2≤4},则M∩N=______.
∵lgx>0⇒x>1,x2≤4⇒-2≤x≤2,
∴M∩N=(1,2].
故答案是(1,2]
It doesn’t matter how many times you fail;_________ matters is how many times you stand up and try again.
A.which
B.that
C.who
D.what
启发性原则是为了处理好教学中获取新知识与保持旧知识之间的矛盾而提出的。( )