【阅读理解Man’sfirstrealinventionsandoneofthemostimportantinventionsinhistorywasthewheel．Alltransportationandmachinesintheworlddependonit．Thewheelisthes】
<p>问题：【阅读理解Man’sfirstrealinventionsandoneofthemostimportantinventionsinhistorywasthewheel．Alltransportationandmachinesintheworlddependonit．Thewheelisthes】<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">郭荣江的回答：<div class="content-b">网友采纳 答案：1．D;2．C;3．B;4．D;解析：(1)第一段一开头就说，轮胎是历史上最重要的发明之一，接着说明的就是其重要之所在(Alltransportationandmachinesintheworlddependonit)。(2)第二段提到轮胎...
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