中考复****科普环保类专项练****一、阅读理解WhenyouwatchTVprogramsaboutwildanimals,itissurprisingtoseehowanantelope(羚羊),,plantshavedevelopedtheirowndefensesystem(防卫系统).Chemicalsarefantasticallyusedbyplantstosurvive(幸存).Bymakingtheirleaves,flowers,rootsandfruitspoisonous(有毒的)toenemies,’sleaves,theamount(数量)ofpoisonincreasesintheotherleaves.“It’sliketheinjuredleavestelephoningtheotherstofighttogetheragainsttheenemy,”,ifanenemyeatstoomanyofthetrees’leaves,,likerabbits,ree,,plantshavenotonlydevelopedtheirowndefensesystem,,,roots,’sleaves,“herbivores”
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