口腔颌面部恶性肿瘤易误诊为（）
A.结核
B.牙龈炎
C.损伤性溃疡
D.上颌窦炎
E.颌骨骨髓炎
参考答案：A, B, C, D, E
----What are you going to do tomorrow?
---_________[ ]
A．I went to the movies
B．I'm going to study for a test
C．I have a sore throat
D．I get to school by bus
霍乱的传播途径是（）。
A.空气
B.粪一口
C.呼吸道分泌物
D.血液
E.性
