标题: 求问OG18一道关于peanut的题 [打印本页] 作者: 狸奴 时间: 2017-10-31 21:03 标题: 求问OG18一道关于peanut的题 Native to South America, when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were quickly adopted into Africa’s agriculture, probably because of being so similar to the Bambarra groundnut, a popular indigenous plant.
A. when peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century they were quickly adopted into Africa’s agriculture, probably because of being
C. peanuts were introduced to Africa by Portuguese explorers early in the sixteenth century and were quickly adopted into Africa’s agriculture, probably because they were
正确答案是C，想向论坛上的各位大神求教：A的问题在哪里呢？是when的用法奇怪？还是因为because of？还是……？