He ______ to the party this evening if he has to look after his younger sister. [ ]

A. needn't to come

B. doesn't need to come

C. doesn't need come

D. needs not come

以下哪种疾病不属于自身免疫性疾病（）。

A.系统性红斑狼疮

B.幼年性特发性关节炎

C.地中海贫血

D.过敏性紫癜

E.川崎病