若三角形三边的长为下列各组数，则其中是直角三角形的是[ ]
A．6，6，6
B．5，12，13
C．4，5，6
D．5，5，8
答案：B
You should consider carefully the car you want to buy is worth the money.
A．that
B．which
C．whether
D．what
饮病的辨证总属于
A．阴盛格阳
B．阳盛格阴
C．阳虚阴盛
D．阴虚阳盛
E．以上均不是
