买卖合同中卖方根本违约所承担的损害赔偿责任，在性质上是( )
A．原给付义务 B．主给付义务C．第二次给付义务 D．附随义务
参考答案：C
－How are you getting along your work?
－Very well, thank you. [ ]
A. on
B. through
C. with
D. to
各种发明创造都可以看做是______问题解决的典型例证。
