（1） 组两原子互为同位素；（2） 组是同一物质；
（3） 组两物质互称为同系物；（4） 组两物质互为同分异构体。
（4分）⑥ ；①②；③ ；④（每空1分）
读短文，回答问题。
Welcome to my new house. There're two bedrooms. There is a living room. It's big. There is a colour TV,
a table, four chairs and a sofa in it. This is my bedroom. There is a bed, a shelf, a table and a chair. There is a
lamp on the table. There are green curtains in front of the windows.
1. Is the home new or (还是) old?
_________________________________________________________
2. What's the living room like?
3. What's the bedroom like?
4. How many chairs are there in the living room?
根据《中华人民共和国海关法》规定的设关原则，如果海关监督管理需要，国家可以在现有的行政区划之外安排海关的直接隶属关系。 ( )
