新生儿溶血病最常见的是

A．葡萄糖6－磷酸脱氢酶缺乏症
B．ABO血型不合
C．MN血型不合
D．球形红细胞增多症
E．Rh血型不合

We've tested three hundred types of boots, none of______is completely waterproof.

A．which

B．that

C．what

D．them