A：水吸热快散热快
B：沙吸热快散热快
C：水和沙吸热散热一样快一样慢
《贝多芬》在立意和构思上扣住什么主题选材？
qīn ài
shù zhī
zhì bìng
měi tiān
____
— Will you buy this tie for Dad?
— I have no idea. I don’t know or not the colour matches his new shirt.
