夏季热最主要的发病原因是()
A.体质因素
B.先天不足
C.病后失调
D.气候炎热
E.暑邪所伤
参考答案:A
It is you rather than Lucy who ____ for the accident.
A.is to blame
B.is to be blamed
C.are to blame
D.are to be blamed
假定质量与能量、热与体积、遗传结构与变异为已知的关系,现在要学习需求与价格的关系,这属于( )
A.下位学习
B.上位学习
C.并列结合学习
D.概念学习