单选题
. Questions refer to the following passage.
17. What does the number 300,000 refer to?______
17. What does the number 300,000 refer to?______
【正确答案】
D
【答案解析】 选项A错误，文中数字后面紧跟people一词，指代一般人而不是雇员。选项B和C文中均未提及。选项D正确，研究者询问300000人的观点。