托福综合写作例文解析TPO 24.docx

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托福综合写作例文解析TPO 24
摘要: 托福综合写作例文解析TPO 24,同学们,如果你觉得你对托福写作考试没有什么把握,尤其是综合写作部分,感觉不知道如何下手,不知所措,那么或许如下的托福综合写作例文解析能够给你以启示。

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Animal fossils usually provide very little opportunity to study the actual animal tissues because in fossils the animals' living tissues have been largely replaced by minerals. Thus, scientists were very excited recently when it appeared that a

70-­‐million-­‐year-­‐old fossil of Tyrannosaurus rex (T. rex), a dinosaur, might still

contain remains of the actual tissues of the animal. The discovery was made when

researchers deliberately broke open the T. rex’s leg bone, thereby exposing its insides to reveal materials that seem to be remains of blood vessels, red blood cells, and collagen matrix.

动物化石很难帮助人们研究动物的软组织,这是因为化石里面的动物活性组织大部分都被矿物质代替了。最近,发现一个 7 千万年前的霸王龙化石中可能存在真正的动物软组织。这令科学家们非常兴奋。科学家小心翼翼地打开了霸王龙腿骨的时候,发现里面存在着可能为血管、血红细胞和胶原蛋白基质的物质。

First, the breaking of the fossilized leg bone revealed many small branching channels inside, which probably correspond to hollows in the bones where blood vessels were once located. The exciting finding was the presence of a soft, anic substance inside the channels. This soft substance may very well represent the remains of the actual blood vessels of T. rex.

首先,打开腿骨化石之后,科学家发现了内部有一些管状分支,这些管状分支可能是骨内血管