单选题:人参组织中树脂道存在的部位是

题目内容:
人参组织中树脂道存在的部位是 A.栓内层
B.木质部
C.韧皮部外侧
D.栓内层与韧皮部
E.韧皮部与木质部

参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析:

A further expansion of farming area will adversely impact o

A further expansion of farming area will adversely impact on the world's natura

查看答案

Consumers in developed countries throw away nearly half of

Consumers in developed countries throw away nearly half of their food purchases

查看答案

听音频:{MP3:/imgcache/attached/media/20140429/20140429170217_71

听音频:{MP3:/imgcache/attached/media/20140429/20140429170217_7116.mp3}根据听到的内容,回答题A

查看答案