请教 harvest 与 harvesting 的区别！GWD4 Q34

跟着笨笨去美国

Q16: GWD-4-34

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

答案为B
想请教牛牛们，B中的harvesting与D中的harvest有什么区别呢？
为什么我有印象在哪本书上看到说“如果有自己的名词形式，+ing则是错误的”
不知道大家怎么看......谢谢~

treowys

是，但是那是在当非谓语时候
这个题主要是 and之间的比较
B都是名词
and they 容易指代不清

ssxxtt27

是，但是那是在当非谓语时候
这个题主要是 and之间的比较
B都是名词
and they 容易指代不清

-- by 会员 treowys (2010/4/19 16:18:19)

为什么是在非谓语的时候？能否举例？

ssxxtt27

顶！

ssxxtt27

不太明白harvest和harvesting 的区别。。。记得在哪看见说是可以互用的。
笔记说二者是同义词

清飞扬

抓大放小，G自有考点，但是不会在这里

wanghongliang

完全不用考虑这个区别啊。
分享做法：
1： 当我看到第一个有such ....like......这种用法，正常是 such ...as 啊，所以a 杀掉，于是我快速的看看有谁还这么用的，于是杀掉e。
2：b，不好说，但看起来工整，留着。
3：c，觉得很不好，首先是 开头it觉得会让我多思考。然后就是后面的一致结构不对，杀掉。
4：d后面的一致结构不对，杀掉。

最后剩下b。