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
网友回答
A. in conclusion
B. in general
C. what’s more
(答案→)D. that is to say
解析：考查短语辨析。that is to say也就是说。句意：他是一个刀具商，也就是说，一个卖刀和锋利工具的人。选D。