Unit1 How tall are you? 介绍自己和朋友的身高体重 范文1:My friends Hi, I’m Tom.I’m 12 years old. I have two good friends. They are Mark and David. Mark is 13 years old. David is 12 years old. David is younger than Mark. Mark is 1.65 meters.David is1.62 meters.Mark is taller than David.Mark is 48 kilograms.David is 46 kilograms.Mark is heavier than David.