________ is often the case with elder people, my grandma talked about my new hairstyle for at least 50 minutes nonstop.

A．That

B．Which

C．As

D．It

男性真性性早熟与假性性早熟的最主要区别点是（）

A.睾丸阴茎均增大

B.生长速度加快

C.出现喉结及变音

D.出现阴腋毛

E.骨龄增速