Many people believe that hunger is only a problem in the developing countries. it is a p

问题补充：

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：

A. For one thing

B. In addition

C. As well

(答案→)D. On the contrary

解析：D考查介词短语。句意：很多人认为饥饿只是发展中国家的问题。相反，这是全世界的问题。for one thing“首先，其一(用来列举理由)”；in addition“另外，除此之外”；as well“还”；on the contrary“正相反”。根据句意可知应选D项。