下列关于复发性阿弗他溃疡的病因，不正确的是
A．免疫因素
B．感染因素
C．遗传因素
D．创伤因素
E．系统性疾病因素
参考答案：D
甲状腺摄131I率的高低有助于
A．了解甲亢的严重程度
B．判断抗甲状腺药物疗效
C．了解血浆内碘的水平
D．甲亢的诊断
E．抗甲状腺药物治疗停药的判断
If you had told him the truth, he ______ so angry now．
A．isn't
B．wasn't
C．wouldn't be
D．wouldn't have been
