With a population of over seven million London is the largest cities of the world.A. bet

问题补充：

With a population of over seven million, London is the largest cities of the world.

A. between

B. among

C. from

D. of

答案：

A. between

(答案→)B. among

C. from

D. of

解析：考查介词：A. between在（两者）之间，B. among在（三者以上）之间，C. from来自， D. of…的，句意：有着超过三百万的人口，伦敦现在在世界最大的城市之一。选B。