下列哪种情况属于预防应用抗菌药物（）
A、腹腔脏器穿孔腹膜炎
B、清洁手术
C、气性坏疽截肢术
D、脓肿切除术
参考答案：B
根据汉语提示写单词。
1. -How do you ____（度过）your summer holiday?
-I often read books.
2. We should ____ ____（向……学习）Lei Feng.
3. I ____（经常）go to the cinema.
4. Can you ____（抓住）a bird?
5. Are they ____ ____（听）the music?
人们通常所说的元曲包括哪几部分？
