神马品牌网西双塘别墅:旧托福语法题目 求助
来源：百度文库 编辑：神马品牌网 时间：2024/05/02 18:58:10
The spice cinnamon and the drugs cascara and quinine all come
from bark, the protective out layer of stems and roots of woody
plants.
百度这里不能写下划线
A)all come B)out C) stems and roots D) plants
请问哪个错？？？？
from bark, the protective out layer of stems and roots of woody
plants.
百度这里不能写下划线
A)all come B)out C) stems and roots D) plants
请问哪个错？？？？
B. out: outer.