滴虫性 * * 炎的主要症状为()及()。
参考答案:稀薄的泡沫状白带增多;外阴瘙痒
( ) 1. What do you want to do?( ) 2. Would you like to play ping- pong?( ) 3. How many pencils?( ) 4. What is it?( ) 5. Where is the picture?
据天津府志记载,早在(),天津的制盐业初现规模。
A.宋代
B.汉代
C.清代
D.明代