托福考试在即，考生表示压力很大，尤其是托福阅读，明明感觉读懂了，但是做的题还是错处。的确，阅读在托福考试中，题量大，费时间。怎么样才能自己的阅读水平和做题速度呢?北京新航道和大家一起共同努力，攻克托福难关。下面是为大家整理的一些阅读方面的材料，专门为大家平时训练而备。其实，阅读不禁要把TPO做好，也要多做一些课外的阅读练习，这样了解得多，做题也就事半功倍了。

　　River deltas are the broad coastal valleys where rivers end their long trek and empty into the sea. Standing on a river delta, you might expect to see rushing water, but you wouldn’t expect the ground beneath your feet to be rushing anywhere. Actually, that ground is probably rushing straight down. Most major river deltas are sinking.

　　What happens is this: Rivers wash away dirt and sediment from the lands they pass over. Much of this ends up at the river’s delta, where the waters spread out and slow down before joining the sea. Over time, sediment can pile so heavily it can actually cause the Earth’s crust to start sagging underneath, maybe an inch or so downward every decade. What’s more, as this sediment landscape dries out it compresses, sinking even more. Those muddy waters of the Mississippi have left behind such a weight of mud that New Orleans is below sea level.If river deltas sink, what keeps them from going under? After all, the sea is right there, waiting to flood any land that sinks too low.

　　The answer is all that sediment. Although the Earth’s crust sags under its weight, the river always has new sediment to deposit–especially when the delta is allowed to flood periodically. This rising sediment keeps pace with the sinking crust, and the level of the land stays pretty constant.

　　Sinking deltas become a problem if the river’s waters are dammed or channeled, rushed to the sea without a chance to spread new sediment over the wide, delta valley. This lack of new sediment is what causes New Orleans to be below sea level.

　　上面是一篇托福课外阅读材料，大家要认真阅读，加强了解和理解，为以后的考试做好准备。最后，提醒大家，阅读要注重全局观念，抓住重点转折点，相信大家都能拿到。

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