unicatewithoneanother?A.municationsystems.B.Becausetheywanttotakeadvantageoftheotherspecies.C.Becausetheytendtokeepmorefoodtothemselves.D.Becausetheybenefitfromusingtheinformationfromotherspecies.[答案]D。[解析]最后一段的“Theanimalsexploitthesystemsofothersfortheirownbenefits.Sometimesthebenefitsarethesameforeach,thereforetheyshareinformation.一种动物利用对自己有好处其他类动物的系统。有时对它们都有好处,所以它们共享信息。”说明物种间能共享有利的信息。三Importantwordsandexpressions.(1)Moko[地名][乍得]莫科Mahia[地名][新西兰]马希亚(2).dolphinn.海豚(3).beach:n.海滩;海滨e.g.:1.Mikeawoketofindthathewaslyingonthebeach.迈克一觉醒来发现自己躺在海滩上。2.Abevyofbathingbeautiesappearedonthebeach.沙滩上出现了一群游泳的美女。V.(船等)搁浅e.g.1.Webeachedthecanoe,runningitrightupthebank...我们把独木舟径直划到岸边,并拖上岸。2.Theboatbeachedonamudflat...船搁浅在一片淤泥滩上。3.Expertsareunabletoexplainwhythewhalesbeachedthemselves.专家们无法解释为什么这些鲸会搁浅在海滩上。
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