Mr Smith has a lot of business . I know by that this man cannot be trusted.
A. experience; experience
B. experiences; experience
C. experience; experiences
D. experiences; experiences
网友回答
(答案→)A. experience; experience
B. experiences; experience
C. experience; experiences
D. experiences; experiences
解析：考查名词。第一个experience作“经验”之意，为不可数名词，by experience平经验，选A。