【题目】Many people believe that hunger is only a problem in the developing countries. , it is a problem all over the world.
A.For one thing
B.In addition
C.As well
D.On the contrary

【答案】D
【解析】句意：很多人都认为饥饿只是发展中国家的问题，恰恰相反，它是一个全世界的难题。A.For one thing“一方面”；B.In addition“而且”；C.As well“也”；D.On the contrary“恰恰相反”。根据句意选D。