与商业经营形态最密切相关的因素是( )。

A．人口增长率

B．产业结构和流动人口

C．职业分布

D．环境景观

Passage Three

What did the speaker expect of life in a country town

A．It would be dull and depressing.

B．It would be comfortable and healthy.

C．It would be strange and surprising.

D．It would be spoilt by tourists with guide books.