文章:
题目:
The author refers to "service workers employed by manufacturers" (line 23) primarily in order to point out
选项:
A、 a type of worker not covered by the United States government's system of classifying occupations
B、 a flaw in the United States government's definition of services
C、 a factor that has influenced the growth of the service economy in the United States
D、 a type of worker who is classified on the basis of work performed rather than on the basis of the company's final product
E、 the diversity of the workers who are referred to as service workers
答案:
B