胚胎中胚层造血首先形成血岛的是
A.骨髓B.肝脏C.脾脏D.卵黄囊E.胸腺
参考答案:D
9. I was angry _____ missing the gongfu film with Cheng Long as hero.
A.at
B.with
C.for
D.On
不易引起高胰岛素血症的疾病是()
A.甲状腺功能亢进
B.糖尿病
C.肥胖
D.高脂血症
E.高血压