A:when does the train leave
B:that we will plant trees or not
C:if she had come yesterday
D:what I should buy for him
小方很难和爸爸相聚在一起,他的爸爸正忙着把长江的水引到遥远的北方,你知道小方的爸爸工作是为了解决:
选出划线字注音完全正确的一项( )
下列关于纬线的说法,不正确的是( )