题干
______ his son away to college, the old couple got more room in the house.
A：As
B：For
C：Through
D：With
答案(点此获取答案解析）
D
______ his son away to college, the old couple got more room in the house.
A：As
B：For
C：Through
D：With
，
，
，
，
，0.010010001···（相邻两个1之间的0的个数依次加1）中，无理数的个数是 ( )