《中华人民共和国固体废物污染环境防治法》把固体废物分为哪三大类?
参考答案:
工业固体废物、城市生活垃圾和危险废物。
下列地理事物中,不属于亚、欧两洲分界线的是[ ]
A、苏伊士运河
B、乌拉尔山脉
C、大高加索山脉
D、乌拉尔河
In China, students ____ greet the teacher when classes begin.[ ]
A. are supposed to
B. are suppose to
C. suppose to
D. is supposed to