Read and answer. (阅读短文，回答问题)      

     Peter, Sarah and Mike are good friends. They are all twelve years old. They are in Grade Four.

They all like sports. Mike is heavier and taller than Peter. So he is a football goalkeeper. Peter is

shorter and thinner than Mike. He runs fast. Sarah's legs and arms are longer than others. She jump

high. The Sports Day is coming. They practice a lot.

1. Who is heavier and taller than Peter?

2. Who is shorter and thinner than Mike?

3. Who can run fast?

4. Why can Sarah jump high?

5. Are they in the same Grade?

秦代长城从西到东的起止地点是                            [ ]

A．临洮到辽东    

B．辽东到临洮  

C．嘉峪关到辽东

D．临洮到鸭绿江