Day 16
1月21日
TPO 20阅读
西南亚定居点 错2对8
西迁移民 错2对8
化石保护 错4对6
两篇历史类的文章,结构很清晰,看起来很舒服。化石那篇,其实结构还好,就是长句比较多,看得有点吃力。然后还是遇到了老问题,时间不够,只好猜了,错的有些多。
需要复习的长难句:
Although aragonite has the same composition as the more familiar mineral known as calcite, it has a different crystal form, is relatively unstable, and in time changes to the more stable calcite.
Water containing dissolved silica, calcium carbonate, or iron may circulate through the enclosing sediment and be deposited in cavities such as marrow cavities and canals in bone once occupied by blood vessels and nerves.
Although it is certainly true that the possession of hard parts enhances the prospect of preservation, organisms having soft tissues and organs are also occasionally preserved.
The European ancestors of some Americans had for centuries lived rooted to the same village or piece of land until some religious, political, or economic crisis uprooted them and drove them across the Atlantic.
The West had plenty of attractions: the alluvial river bottoms, the fecund soils of the rolling forest lands, the black loams of the prairies were tempting to New England farmers working their rocky, sterile land and to southeastern farmers plagued with soil depletion and erosion.
Two other developments presaged the end of the era of turnpikes and started a transportation revolution that resulted in increased regional specialization and the growth of a national market economy.
The climatic changes in southwestern Asia were more subtle, in that they involved shifts in mountain snow lines, rainfall patterns, and vegetation cover.
Pollen samples from freshwater lakes in Syria and elsewhere tell us forest cover expanded rapidly at the end of the Ice Age, for the southwestern Asian climate was still cooler and considerably wetter than today.
These people exploited the landscape intensively, foraging on hill slopes for wild cereal grasses and nuts, while hunting gazelle and other game on grassy lowlands and in river valleys.
Thanks to extremely fine-grained excavation and extensive use of flotation methods (through which seeds are recovered from soil samples), we know a great deal about the foraging practices of the inhabitants of Abu Hureyra in Syria's Euphrates valley.
For the next 1,500 years, its inhabitants enjoyed a somewhat warmer and damper climate than today, living in a well-wooded steppe area where wild cereal grasses were abundant.
They were no longer a series of small bands but lived in a large community with more elaborate social organization, probably grouped into clans of people of common descent.
The flotation samples from the excavations allowed botanists to study shifts in plant-collecting habits as if they were looking through a telescope at a changing landscape.
Many complex factors led to the adoption of the new economies, not only at Abu Hureyra, but at many other locations such as 'Ain Ghazal, also in Syria, where goat toe bones showing the telltale marks of abrasion caused by foot tethering (binding) testify to early herding of domestic stock.
需要复习的单词: adoption drought vicinity excavation elaborate gazelle sizable intercommunity forage turnpike thereafter deprivation
总结: 1 GRE长难句里,开头就提到不要回视,目前阅读速度的瓶颈和我经常回看有关,需要戒掉。 2 有些单词稍稍变了样子就认不出来了,或者背诵过的不同意思回想不起来(forage觅食的意思就忘记了),单词还是需要反复复习,尤其是不同的意思都要看 3 单项练习还要加强,比如语法,特别是从句的句子结构。
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