分析 本文是一篇議論文,其論點是最近的一項對古代和現(xiàn)代大象的研究提出了一個意想不到的結論:既非洲象分為兩個截然不同的品種.之后運用了論據加以證明,其中還引用了Alfred Roca的話,并提出了要對非洲象進行保護.
解答 70.D 細節(jié)理解題.由題干中的"fossils",再結合文中第二段的第一句:Once they obtained DNA sequences (序列) from two fossils,mammoths and mastodons,the team compared them with DNA from modern elephants.一旦他們從兩個化石(猛犸象和乳齒象)獲得DNA序列,團隊就會比較現(xiàn)代大象的DNA.故選D.
71.A 細節(jié)理解題.根據文中倒數第二段的最后一句However,the proof lay in the analysis of the DNA.題中conclusion,based on定位,與文中l(wèi)ay in 同義替換.故選A.
72.B 理解推斷題.由題中的Alfred Roca's,找到文章的倒數第一段Since 1950all African elephants have been conserved as one species.Now that we know the forest and savanna elephants are two very distinct animals,the forest elephant should become a bigger priority for conservation purpose.再結合選項可知是關于對非洲大象的保護.故選B.
73.C 標題判斷題.文章首句即點明主旨A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct species.故選C.
點評 考點:本文考察了學生的議論文型閱讀理解,需要學生認真閱讀原文,仔細查找文中細節(jié),對文章脈絡有整體的了解,能根據文章進行合理推斷.
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