很多考生会抱怨托福阅读时间不够，还没完全理解文章就做题，正确率不高。其实这是我们对托福阅读素材不熟悉造成的，下面小编整理了一下托福阅读考试最新的素材，希望能帮助大家更加快速高效的备考托福。

　　托福阅读素材：侏罗纪时期的气候

　　第一段：侏罗纪早起的气候的温热的，四季分明的

　　第二段：当时的一些气候特征，提到了 caliche 和同位素(有题)

　　第三段：到了侏罗纪中期，气候开始改变

　　第四段：极地冰川的缺失有重大的影响—海平面上升

　　第五段：陆地上的气候变化很大，很短的距离里可以经历不同的气候特征(有题)

　　参考阅读：

　　The geological record shows, compared to the present, that the Jurassic Earth was an exotic world. The climatic processes operating are illustrated by reference to Late Jurassic palaeoclimate reconstructions generated on a computer-based General Circulation Model. Throughout the Period, and indeed through much of the Mesozoic, dense forests grew close to both poles and experienced months-long daylight. Models suggest that they experienced warm summers, and months-long darkness in cold, sometimes snowy, winters. Ocean deeps were warmer, perhaps by 8 degrees C, than the present. Reefs grew 10 degrees of latitude further north and south than at the present time but with corals as a subordinate component. The whole Earth is modelled to have been warmer than now by 5 degrees C to 10 degrees C, causing a higher atmospheric humidity and greatly enhanced hydrological cycle. Modelling also suggests that much of the rainfall was convective in character and focused under the Intertropical Convergence Zone over the oceans, leaving major desert expanses on the continents. There is no direct geological evidence for polar ice sheets which, from model output, are unlikely to have been present for most of the time because of the high summer temperatures in these areas. Oxygen isotopic ratios in marine shells are more negative (i.e. show less O-18 enrichment) than during later times, reflecting an absence of major terrestrial ice caps which would have stored water enriched with O-16. Localized mountain glaciers cannot be ruled out, particularly in high altitude southern polar terrains, but there is no convincing evidence of short-term and large-scale custatic changes associated with major glaciation and deglaciation comparable with those of the Neogene. Model results for the Jurassic do, however, suggest the possibility of upland ice sheets during orbitally induced climatic minima. During the Jurassic, the world was predominantly warm with at least four times the present level of atmospheric CO2, and model outputs for evaporation and precipitation generally conform well with the known distributions of evaporites, calcretes and other climatically sensitive facies.

　　所考词汇：

　　faithful=accurate

　　admire=in high opinion of

　　fragile=delicate

　　perceive=see

　　garment=cloth

　　thus=in this way

　　install=put in place

　　promote=encourage

　　obtain=gather

　　a wealth of data=a lot of information

　　preserve=survive

　　encompass=include

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