—Dinner is ready. Help yourself!

—Wow! It ______ delicious. Could you please tell me how to cook it? [ ]

A. tastes

B. looks

C. sounds

D. Feels

原发性免疫缺陷病()
器官特异性自身免疫性疾病()
系统性自身免疫性疾病()
继发性免疫缺陷病()

A．结节性多动脉炎

B．孤立性IgA缺乏症

C．溃疡性结肠炎

D．AIDS

E．慢性肥厚性胃炎