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| 作者:不明 来源:www.pccode.net 整理 发布时间:2007-1-23 14:05:14 发布人:wongrs | |
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(6)例证句 (六)选择搭配题常考的逻辑关系词 并列和递进关系 ①标志词 and, indeed,also, besides, almost, even, similarly, like, correspondingly, accordingly, in the same way, meanwhile, furthermore, moreover, too [D]The best index fossils tend to be marine creature .There animals evolved rapidly and spread over large over large areas of the world . [E]The earliest animals whose remains have been found were all very simple kinds and lived in the sea. Later forma are more complex ,and among these are the sea-lilies , relations of the star-fishes ,which had long arms and were attached by a long stalk to the sea bed ,or to rocks . [F]When an animal dies ,the body ,its bones ,or shell ,may often be carried away by streams into lakes or the sea and there get covered up by mud .If the animal lived in the sea its body would probably sink and be covered with mud .More and more mud would fall upon it until the bones or shell become embedded and preserved . [G]Many factors can influence how fossils are preserved in rocks .Remains of an organism may be replaced by minerals, dissolved by an acidic solution to leave only their impression, or simply reduced to a more stable form . [题解] 本篇介绍的是史前类 动物 。文章结构的脉络清晰:首先介绍什么是史前 动物 和我们研究史前 动物 的依据——化石,以及化石形成的过程。随后,作者即按照 动物 进化的顺序——我们可以见到其化石的最早的 动物 ,水生壳类动物,脊椎类动物——逐一加以介绍。 41.文章一开始,作者告诉我们,早在人类出现以前地球上就许多物种,现在有些物种的后代依然生存,而另外一些则没有留下后裔。在本题空白处后面文章又说岩石上偶尔会留下数百万年前就死掉了的动物精确的印记。显然,空白处应该是关于岩石与灭绝了的动物之间的关系(7个选项中有A﹑B﹑E﹑G四项提到了“rock",但另外大三项意思上不符)。此外,空白处前面的“extinct"和“no descendant"均为否定意义和表达,而空白处的后面“accurate"和“much"则为肯定意义的表达;这意味着空白处的内容应该有一个结构上的“转折—只有B项符合这一条件。所以正确答案只能是B。(注意:这道题去年的考试大纲中是段尾题,现在成了段中题,估计是打印错误)
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