根据短文内容，用适当的词完成下列句子。
Hello, my name is Mike, and I live in England.
I am in a primary school. We go to primary school from age five to eleven. We go to middle school
from age eleven to sixteen. I will have a test tomorrow because we take tests when we are seven, eleven,
fourteen, and sixteen.
We wear uniforms when we go to school. You can see I wear a black coat and a white shirt. I also
have a tie !
My classmates and I have lunch at school. I don't like it.
Our summer vacations are six weeks long.
We play many sports here, like basketball, soccer and tennis. My favorite is soccer. In England, we call
it football. There are other things for fun, too.
l. Mike comes from _____ .
2. Mike's coat is _____ and his shirt is_____ .
3. He has lunch at _____ every school day.
4. Mike likes playing _____ best.
，两球带异种电荷，接触后，带电量之比为3:3，
，则
。