单项选择题
According to the passage, during the 18th and 19th cent...
单项选择题According to the passage, during the 18th and 19th centuries cities were small in size mainly because（）
A．the urban pupulation was stable. B．few people lived in cities. C．transport was backward. D．it was originally planned.
Cities survived in those days largely as a result of（） ...
单项选择题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.
According to Janet, the factor that would most affect n...
单项选择题According to Janet, the factor that would most affect negotiations is
