何谓眼袋?
参考答案：
主要是指发生在下睑。中年以上者，由于眶隔松弛，脂肪球将眶隔推出，在颧骨皱襞处，即相当于眶下缘的上方形成假性眶隔脂肪疝。
根据句意及首字母提示完成单词。
1. There aren't a_____ students in the room.
2. The tall b_____ is a hotel and there are a lot of rooms in it.
3. There is a big g_____ in our school and we often play basketball in it.
4. —Where's my s_____ book?
—It's in the lab.
5. Don't sit in f_____ of me. I can't see the blackboard.
Q/SY1002.1—2007《健康、安全与环境管理体系第一部分：规范》对“变更管理”有什么要求？
