1. (2020六上·肇东月考) 根据短文内容判断对错。

Alan: Mother, this is my friend, Bruce.

Bruce: Nice to meet you, Mrs. Green.

Mrs. Green: It's nice to meet you, Bruce.

Alan: And these are my grandparents, Charles and Nancy Green. That's my uncle, Dustin, and this is my sister, Emma.

Bruce: Hello! Hello! And is this your cousin?

Alan: Yes, this is Clark.

1. （1） Bruce is Alan's brother.
3. （2） Charles and Nancy are Alan's grandparents.
5. （3） Mrs. Green and Bruce are cousins.
7. （4） Dustin and Clark are cousins.
9. （5） Emma and Alan are sister and brother.