More and more Chinese people follow the practice _____ they will travel to various scenic spots to enjoy the scenery in their leisure time. [ ]

The activity is held annually in Chinatown with the purpose of the Chinese tradition.

The girl _______long hair is very beautiful.

下列各句中加线的成语使用恰当的一项是（ ）

－Do you know that there are many different animals in the zoo －Yes, I do. And I also know that some of them are scary.