沙漠化植被的保护措施，小盒子是否能起到用处。
文章说起不到用处，三个原因
1、太贵；
2、当地人不愿意帮助安装和维护；
3、植被成长了脱离了小盒子还是无法生长。
听力材料反驳：
1、循环使用，可以用20次；
2、可以给当地人收集水给蔬菜，树长大了可以给当地人提供木材；
3、小时候建立了根，长大了不怕恶劣环境
The lecture objects to the view mentioned in the reading with strong supporting evidences presented, aiming to further demonstrate the effectiveness of the device to collect water in desert.
Firstly, from the perspective of the cost, the professor states his doubt, because according to the lecture, considering that the device can be repeatedly used for 20 times, the current price is reasonable enough.
Moreover, judging from the willingness to set up the device, the professor holds a different view, as the lecture further illustrates that the device benefits the locals in two ways. On one hand, the water collected in the device can be used to water the vegetables and on the other hand, the trees after growing up can be logged. And thus the locals are willing to do so.
Last but not least, on the point of the survival of vegetation, the professor never fails to express his concern, because in terms of the listening, once the tree reaches water sources and takes root in the deeper soil, over 90% of the trees can grow well independently without the help of the device. (185 words)
