问题
单项选择题
The industry of producing hundreds of artificial flavors and fragrances probably appeared in ______
A．2000
B．1953
C．1909
D．1810
答案
参考答案：C
解析：[分析] 细节题型。 见第一段第三句：Since the early twentieth century, success in reproducing these substances has created a new industry that…符合“二十世纪早期”条件的选项只有C，所以是答案。