认为迁移的具体的，有条件的迁移理论是（）
A．形式训练说
B．共同要素说
C．经验类化说
D．关系转换说
参考答案：B
In my opinion, all Mr White ____ good to his students in his class at present. He is very strict in their study.
A．does does does
B．does did do
C．does does do
D．did do does
机械零件在超过屈服强度的条件下工作，会引起机件的塑性变形。
