单项选择题
Our Accounts Receivable Department has written to you three times;（）,we have had no response to our letters.
A.consequently B.moreover C.thus D.however
单项选择题 （）in the labor market,he has enrolled in a computer course.
单项选择题 Information about the current foreign markets （） very important to our company.
单项选择题 Of all the solutions to the disputes,the one proposed by Mr.Jackson is （）.
