Do you know David? He is an American boy. He’s eleven. He is in Class Two, Grade One. He has a sister. Her name is Joy. She is five. They have a dog(狗). Its name is Dongdong. How old is it? I know it’s two.

小题1:David is a_______.

A． boy

B．girl

C．English boy

D．English girl小题2:David is__________ and Joy is____________

A．five; five

B．eleven; four

C．five; eleven

D．eleven; five小题3:Joy is David’s_________.

A． brother

B．friend

C．sister

D．classmate小题4:Dongdong is the name of a___________.

A．cat

B． dog

C．bird

D．child小题5:The dog is________.

A．eleven

B．five

C．two

D．one

景观要素强调的是（）。

A、异质性

B、动态性

C、不变性

D、均质同一性