She often shares her deepest thoughts and fears with friends through QQ, as if they______   chatting in her living room.

A．were

B．are

C．had been

D．has been

下列表现的疾病为：男孩，6岁，低热3天，两下肢及臀部有出血性皮疹，伴腹痛，便血1次，两踝关节肿痛，1周前曾患上呼吸道感染。（）

A.风湿性关节炎

B.化脓性关节炎

C.川崎病

D.结核性关节炎

E.紫癜性关节炎