In the United States, there is always flow of people to areas of country where m

In the United States, there is always ____ flow of people to areas of ______ country where more jobs can be found.

A. a; the                         B. the ; a                        C. the; the                D. a; a

试题答案

A

解析a flow of people人员流动。用不定冠词表示泛指；country指全文提到的the United States，表示特指，故用定冠词修饰。