Although he has no education, he is one of the______businessmen in the company, which was established by Mr. Smith three years ago.
【正确答案】 B
【答案解析】解析：句意：虽然他没有教育背景，但是他是公司里最精明的经营者。而该公司是史密斯先生三年前创建的。stern严厉的，苛刻的。shrewd精明的。nasty肮脏的，下流的。lazy懒惰的。