新视野大学英语第3版第四册课后答案第七单元新视野4读写答案uni

新视野大学英语第3版第四册课后答案第七单元新视野4读写答案uni 　《新视野大学英语》选材充分考虑新一代大学生的知识构造和思维特点，表达时代特色，注重趣味性、思辨性。下面为同学们了新视野大学英语读写

新视野大学英语第3版第四册课后答案第七单元新视野4 读写答案uni 《新视野大学英语》选材充分考虑新一代大学生的知识构造和 思维特点，表达时代特色，注重趣味性、思辨性。下面为同学们了 新视野大学英语读写课程第三版(第二版)第四册Unit1、Unit2、 Unit3、Unit4、Unit5、Unit6、Unit7、Unit8、Unit9、Unit10课 后答案，第2版同样适用，供大家参考! Ex.II,p.178 Thebookconcludesthatdespitesurfacefeatures,the "races"areremarkablyalikeundertheskin. LucaCavalli-Sforza,aStanfordprofessor,andhis colleagues. Inhumanblood:variousproteinsthatserveasmarkersto revealaperson'sgeicmakeup. Becausetheysharesuchsuperficialcharacteristicsasskin colorandbodyshape.Butthediscoveriesindicatethat AustraliansaremostdistantfromtheAfricansandmost closelyresembletheSoutheastAsians. ItconfirmsthatAfricawasthebirthplaceofhumanityand thusthestartingpointoftheoriginalhumanmovements. TheirgenesshowtheKhoisanmaybeaveryancientmixof westAsiansandblackAfricans,ratherthanbeingdirectly descendedfromthemostprimitivehumanancestors. AllEuropeansarethoughttobeamixedpopulation,with 65%Asianand35%Africangenes.