读一读，根据情景判断分别是什么课程
P.E. science music math
【小题1】Teacher: What’s seventy and eleven?
Students: Eighty-one.
Subject:___________
【小题2】Teacher: Boys, ready? Go!
Students: Come on (加油)! Come on!
Subject:___________
【小题3】Teacher: Light travels (传播) faster than sound (声音).
Students: But why?
Subject:___________
【小题4】Teacher: Let’s sing the song sunlight (《阳光》).
Students: OK.
Subject:___________
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