下列山地对冬季风南下有明显的阻挡作用,并形成山地两侧不同的气候特点的是( )
A:大兴安岭
B:秦岭
C:南岭
D:昆仑山
按气候统计标准划分的四季,北半球的春季指( )
I scared of dogs ever since a dog hurt me when I was five years old.
He____ ____ while having a P.E. class.