练习材料：

Lesson 17-1 A man-made disease 

In the early days of the settlement of Australia,enterprising settlers unwisely introduced the European rabbit. This rabbit had no natural enemies in the Antipodes, so that it multiplied with that promiscuous abandon characteristic of rabbits. It overran a whole continent. It caused devastation by burrowing and by devouring the herbage which might have maintained millions of sheep and cattle. Scientists discovered that this particular varietyof rabbit (and apparently no other animal) was susceptible to a fatalvirus disease, myxomatosis. By infecting animals and letting them loose in the burrows, local epidemics of this disease could be created. Later it was found that there was a type of mosquito which acted as the carrier of this disease and passed it on to the rabbits. So while the rest of the world was trying to get rid of mosquitoes, Australia was encouraging this one.

应用配置：L0+L4

知识笔记：      enterprising/    unwisely/    Antipodes/    promiscuous/    burrowing/    variety/    susceptible/    virus/    epidemics/    mosquito/

练习感悟：用时约1小时40分。生词多，读起来坑坑巴巴，早上没完成任务，晚上再补。