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郑州新航道 > 托福 > 托福阅读最后一道题怎么做?

托福阅读最后一道题怎么做?

来源:      浏览:      发布日期:2020-07-23 17:34

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There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.Various environmental factors may play a role. Too much snow, for example, can smother trees, and avalanches and snow creep can damage or destroy them.Late-lying snow reduces the effective growing season to the point where seedlings cannot establish themselves. Wind velocity also increases with altitude and may cause serious stress for trees, as is made evident by the deformed shapes at high altitudes.Some scientists have proposed that the presence of increasing levels of ultraviolet light with elevation may play a role, while browsing and grazing animals like the ibex may be another contributing factor. Probably the most important environmental factor is temperature, for if the growing season is too short and temperatures are too low, tree shoots and buds cannot mature sufficiently to survive the winter months.

托福阅读最后一题:

1.Birch is one of the few species of tree that can survive in the extreme environments of the upper timberline.

2.There is no agreement among scientists as to exactly why plant growth is sharply different above and below the upper timberline.

3.The temperature at the upper timberline is probably more important in preventing tree growth than factors such as the amount of snowfall or the force of winds.

4.The geographical location of an upper timberline has an impact on both the types of trees found there and their physical characteristics.

5.High levels of ultraviolet light most likely play a greater role in determining tree growth at the upper timberline than do grazing animals such as the ibex.

6.Despite being adjacent to the timberline, the alpine tundra is an area where certain kinds of low trees can endure high winds and very low temperatures.

托福阅读最后一道题怎么做1.jpg

托福阅读最后一道题怎么做?

首先,找主题句。

句话,到现在没有出现同一个观点,为什么在这个地方它树不长了?

第二句话,不同的环境因素,可能起到作用。

在这里,哪个词很关键呢?

很明显是factors因素。而且因素这个单词是复数。

这就意味着文章后面应该是并列的,因为不仅仅只有一个因素,所以我们接下来要去找是哪些因素。分别是snow, wind velocity, ultraviolet light, browsing and grazing animals, temperature,一共有五个因素。

我们看到这些因素的时候,在脑海里面能记就记,记不住就快速地简写一下。

再回头看这道题,这段话的主题就是文章的第二句话,这句话后面就是细节。

这道题的题型是总结题,一般是不选细节的。选某一段的主题,或者说某两段三段都可能做笔记,所以最后一道题它有可能概括两段概括三段。

做最后一道题的时候,我们一般用两种方法来做。

托福阅读最后一道题怎么做2.jpg

种方法就是主题法,第二种方法就是排除法,这两种方法结合起来用效果。

首先我们用排除法。一共有6个选项,你感觉哪个选项是可以排除的?

可以排除的选项3和5,分别提到了temperature和ultraviolet light,这两个都是这一段里面的细节,所以可以排除。

接下来,用主题法来做一下。

看哪个选项概括了这段话。

答案是第二个选项,现在没有普遍的同意为什么树在上面和下面长得不一样。

而原文说的是现在没有一致同意为什么中间的过渡带不长东西了。

两者的意思是一样,只是说法不一样。这也是同意替换。

以上是对托福阅读最后一道题怎么做的介绍,希望能帮助到大家。

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