单项选择题
In Sections A, B and C you will hear everything once only. Listen carefully and then answer the questions that follow.SECTION A TALK Questions 1 to 5 refer to the talk in this section. At the end of the talk you will be given 15 seconds to answer each of the following five questions. Now listen to the talk.
Cities survived in those days largely as a result of() A.the trade activities they undertook.
B.the agricultural activities in the nearby areas.
C.their relatively small size.
D.the non-economic roles they played.