牙齿燥如枯骨多为（）
A.阳明热盛津液大伤
B.肾阴枯竭精不上荣
C.肾阴不足虚火上炎
D.胃阴损伤
E.湿热蕴脾
参考答案：B
________pollution control measures are expensive, many industries hesitate to adopt them.
A．Although
B．However
C．Because
D．On account of
慢性肥厚性咽炎淋巴滤泡不应()
A.手术切除
B.硝酸银烧灼
C.电灼
D.激光
E.冷冻
