1、Unit 4Wildlife protectionWe have to understand the problem,in a new light that we protect ourselves through protecting wildlife.On the one hand,any species of wildlife,as a critical(关键的)joint of the ecological chain,helps to establish the ecological balance.If one species becomes extinct,it will dis
2、appear forever.What_is_more，it will inevitably(必然地)result in the extinction of a chain of wildlife and the disruption(破坏)of the ecological balance.Unpredictable(不可预知的)disasters may occur.It is urgent for us to protect wildlife right now before it is too late,because man has already polluted the envi
3、ronment seriously and threaten the existence of many wild species.Lets take action to protect wildlife.Learning to live in_harmony_with all wildlife is part of modern civilization.Notes：extinction IkstIkn n灭绝significance sIgnIfIkns n.重要性What is more而且；此外chain teIn n&vt.连锁；用链子锁genetic codes遗传密码in har
4、mony with与协调Read the passage carefully and judge the following sentences true(T)or false(F)1Protecting wildlife is a task of students.()2People should learn to live with animals together.()3There are many factors leading to animalsextinction.()4Environment pollution can make people live shorter.()FTTT
