※ 引述《hippowo (迷戀摩卡~~)》之銘言：
: ※ 引述《hippowo (迷戀摩卡~~)》之銘言：
: : 可是這是單選題啊
: The youngest layer of xylem would be located A) just out the pith
: B) just outside the cambium C) just inside the cambium D) immediately
: adjacent to the periderm E)none of the above
C吧 想想樹木的例子
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