下列有关等级相关系数ts的描述中不正确的是（）。A．不服从双变量正态分布的资料宜计算

My name  31 Bill. I’m  32 English boy. I’m twelve. I’m a middle school student. Li Lei is my  33 . We’re in the same class. Here is a photo  34 his family. Look, this is his  35 . He is a policeman. His  36 is a teacher of English. She is a good teacher. Li Lei has   37 sisters.   38 are twins(双胞胎). Their  39 are Fang Fang and Yuan Yuan. They have a cat. We are good 40 ,too.

小题1:	A．am B．is C．are D．call

小题2:	A．a B．an C．\ D．the

小题3:	A．brother B．cousin C．friend D．teacher

小题4:	A．at B．in C．of D．for

小题5:	A．parents B．mother C．grandparents D．father

小题6:	A．parents B．mother C．grandparents D．father

小题7:	A．a B．one C．two D．three

小题8:	A．She B．He C．We D．They

小题9:	A．name B．names C．family names D．first name

小题10:

A．family B．parents C．friends D．names