很少引起咽痛的疾病是：（）
A．咽角化症
B．急性咽炎
C．急性扁桃体炎
D．扁桃体周脓肿
E．急性会厌炎
参考答案：A
—Do we have to finish writing the composition today?
—No, you ______. If you can hand them in tomorrow, it will be OK. [ ]
A. needn't
B. wouldn't
C. mustn't
D. shouldn't
系统性硬化病的特征性表现除外（）
A.手指皮肤病变
B.雷诺现象
C.肾危象
D.关节痛／关节炎
E.肺动脉高压
