气管异物临床表现有的是（）
A.剧烈呛咳、憋气
B.拍击音
C.窒息
D.哮鸣音
E.两肺呼吸音不一致
参考答案：A, B, C, D
根据句意及首字母提示完成单词。
l. Tom is a s _____ man. He always wears a hat all the year round.
2. The plane t _____ off from Hong Kong at 21:00 last night.
3. My mother b _____ me a new computer yesterday.
4. To my s _____, the alien was shopping.
5. The boy was walking down the street when the UFO l _____.
肉芽组织中缺少( )。
A．内皮细胞
B．神经细胞
C．炎性细胞
D．成纤维细胞
E．肌纤维母细胞
