第20题: [单项选择]A. an official
B. a marketing researcher
C. a health products exporter
D. an agent for textiles
E. a trader for livestock and poultry
F. a clothing maker
G. a company’’s receptionist
H. a board member
参考答案:E 答案解析:Man: Last month a businessman from Singapore ordered a total of $ 310, 000 worth of livestock and po