2. 外语
  3. Which TWO materials can be used as a substratum? A．oxygen-rich solution B．coconut fibre C．mineral wool D．rock

Which TWO materials can be used as a substratum? A．oxygen-rich solution B．coconut fibre C．mineral wool D．rock

admin2012-01-16  27
问题     Which TWO materials can be used as a substratum?
    A．oxygen-rich solution
    B．coconut fibre
    C．mineral wool
    D．rock
    E．paper fibre
选项
答案(outright) failure
解析
转载请注明原文地址:https://jikaoti.com/ti/7GtYFFFM
本试题收录于： 雅思听力题库雅思（IELTS）分类
0

雅思听力

雅思（IELTS）

相关试题推荐
随机试题
最新回复(0)