下列哪些疾病属于自身免疫病（）
A.特应性皮炎
B.皮肤松垂症
C.青少年糖尿病
D.原发性血小板紫癜
参考答案：C, D
―If the traffic hadn’t been so heavy, I could have been back by 6 o’clock.
―What a pity! Tina _______ here to see you.
A．is
B．was
C．would be
D．has been
Clq减低可见于（）
A.骨髓炎
B.过敏性紫癜
C.肾病综合征
D.SLE
E.类风湿关节炎
