金属材料的强度越高，则抵抗塑性变形的能力越小。( )
参考答案：错
The boy asked his mother ______ go out to relax himself or not. [ ]
A. whether could he
B. if he could
C. that he could
D. whether he could
估价时点原则要求房地产估价结果应是估价对象在估价时点的价值。 ( )
