用am, is和are填空

1. —_________ this your friend, Maria?         

    —Yes, it ________

2. —________  you  Michael?                

    —No, I _________ not.

3. Mary and I ___________from Canada. We __________ in China.

4. —_________ he Li Ming?                   

    —No, he ________ Kangkang.

5. My name _________ Kumiko. I ________ from Japan.

所谓平稳随机过程,是指它的n维分布函数或______函数不随时间的平移而变化,或者说不随时间原点的选取而变化。