GWD-30-3 有疑问

fg_bamboo

搜了一遍, 发现以前没有讨论过, 但是我有一问题:

GWD-30-3:

Like ants, termites have an elaborate social structure in which a few individuals reproduce and the rest are serving the colony by tending juveniles, gathering food, building the nest, or they battle intruders.

E. serve the colony by tending juveniles, gathering food, building the nest, or battling

答案是E,

我的疑问是这里为什么不用and, 而要用OR?

谢谢指点

mars_cheung

我觉得用 or 表明句子所述的几种职能不被一只蚂蚁兼容吧

paopaogjp

这里是a b c or d 吗有这种搭配吗？