要约是希望和他人订立合同的意思表示，该意思表示应当内容具体确定且表明经受要约人承诺，要约人即受该意思表示约束。( )
参考答案：对
He is a cutler(刀具商)--_____, a man who sells knives and sharp tools.
A．in conclusion
B．in general
C．what’s more
D．that is to say
It’s really hot ______January in Harbin now. Better take off your coat.
A．in
B．during
C．for
D．to
