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  3. The spice cinnamon and the drugs cascara and quinine (all come) from bark, the protective (out) layer of (stems and roots) of wo

The spice cinnamon and the drugs cascara and quinine (all come) from bark, the protective (out) layer of (stems and roots) of wo

admin2005-01-30  66
问题 The spice cinnamon and the drugs cascara and quinine (all come) from bark, the protective (out) layer of (stems and roots) of woody (plants).
选项 A、all come
B、out
C、stems and roots
D、plants
答案B
解析
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