若集合A={-1，0，1}，B={-1，2}，则A∩B= [ ]
A.{-1}
B.{-1，2}
C.{-1，0，1}
D.{-1，0，1，2}
答案：A
This is the Green family. Mr and Mrs Green are from England. They are both good English teachers. They teach English in a junior high school in China. They like their work a lot . They have two children, Tom and Betty . They are in Beijing now. They are in the same school. But they are in different grades. Mr Green can speak Chinese. He likes reading, Tom and Betty like playing games in the park.
Judge the following sentences true (T) or false (F) according to the passage.
小题1:The Green family are from Canada .
小题2:Now they are in England .
小题3:They teach English in China
小题4:Tom and Betty are in different grades , but in the same school .
小题5:The two children like reading .
综合自然区划有哪两种方法：
