I'm away from home, so I have many things to adjust for.
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First of all, living at college gives me a sense of responsibility, of being on my own.
A. 对
B. 错
Everything I do has to be my decision, and that makes me responsibility for my own life.
A. 对
B. 错
被称为三大主要固体材料的是( )、金属材料和高分子材料。