All of the plants now raised on farms have been developed from plants___wild.
题目
All of the plants now raised on farms have been developed from plants___wild.
A.once they grew B.they grew once C.that once grew D.once grew答案选什么?为什么?
答案
选C
农村上现在种植的植物都是从原先的野生植物发展而来.
once是曾经,原来的意思
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