1. 阅读短文，判断正误。

My name is John. I am 12 years old．I am 1.6 metres．I am 48 kilograms. I have a brother, and his name is Jack. He is 12 years old, too. We are twins．He is 1.61 metres．He is taller than me．He is 50 kilograms．He is stronger than me．

1. （1） Jack and John are twins．

3. （2） Jack is heavier than John．

5. （3） Jack is shorter than John．

7. （4） John is 50 kg．

9. （5） Jack is stronger than John.