Q34:
Building on civilizations that preceded them in coastal Peru, the Mochica developed their own elaborate society, based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting other wild and domestic resources.
based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting
based on the cultivation of such crops as corn and beans, the harvesting of fish and seafood, and the exploitation of
and basing it on the cultivation of crops like corn and beans, harvesting fish and seafood, and the exploiting of
and they based it on their cultivation of crops such as corn and beans, the harvest of fish and seafood, and exploiting
and they based it on their cultivating such crops like corn and beans, their harvest of fish and shellfish, and they exploited
答案是B,我选D.有哪位NN能给解释一下吗?谢谢. | 
