In the lecture, the professor states that the argument adopted by the passage which says that these measures could stop the spread of the cane toad in Australia is likely unsuccessful and causes environmental damage. Here are the three reasons.
To begin with, the passage makes the point that a fence would block the advance of the toad to prevent them from moving. But the professor in the lecture is skeptical, and he thinks a national fence would not stop the spread of the young cane toad because of their no stable location. And the flowing river, the river way can carry the young cane toad and toad eggs to other regions through the fence. So the national fence is not effective.
In addition, the speaker points out that the volunteers did can destroy some toads, however, when they do this, they may destroy the native frogs which are in danger at the same time, which contradicts the passage claiming that the toads could be captured and destroyed by volunteers.
Furthermore, according to the passage, a kind of virus which will be specially designed can be used to control the toad populations. But the professor demonstrates a different idea that developing a disease-causing virus is a bad idea because it would cause terrible results. It will effect regional environment and cause harm to other populations, and bring ecosystem disaster.
-有些地方的用法也不好 比如说argument adopted by the passage貌似没有这么用的 直接说in the passage更好 三段的the volunteers did can destroy some toads语法错误,并且 在此处这个句子应该是结束的。however应该是另起的一句。如果不另起 就会造成歧义。
-还有指代不明的地方 比如these measures 哪些measures???
第一段 我推荐你首句先总结passage的内容,然后另起一句总结叫兽的lecture的内容比如说 However, the professor points out that none of measures listed in the passage will be useful and gives three reasons.