Great attention must be devoted agriculture(农业), especially in China,
population is the largest in the world.
A. to be developed; whose
B. to develop; which
C. to developing; whose
D. to developing; which
网友回答
A. to be developed; whose
B. to develop; which
(答案→)C. to developing; whose
D. to developing; which
解析：devote … to ，to为介词，因此后加doing；第二空考查定语从句，China作population的定语，因此用whose引导。