四级道路保洁质量要求主要有哪些？
参考答案：
每天应清扫1-2次，部分路段应实行定时保洁。
根据首字母及句意补全单词。
1. At the c____, we can enjoy songs and music.
2. You can come o to Beijing for a holiday.
3. No.1 Middle School will have a basketball m with No.2 Middle
School.
4. I'm a football player in our school team. and I often have t at school.
5. He has to study for the s test.
具有化瘀止血利尿作用的药物是
A．蒲黄B．三七C．白及D．棕榈炭E．茜草
