托福阅读词汇题在托福阅读题型中是很基本的一类题型。它考察大家对于词汇在文章中含义的把握。词汇题最让大家感觉困难的地方或许不是词汇本身是不是熟悉，而是因为词汇题考查词汇在语境环境下的运用，很多情况下，即使大家对词汇了解，也不敢轻易选择答案。所以，托福阅读词汇题目最保险的解题方式就是根据上下文来推测。而因此，如何根据上下文来推测词义就是考生不得不学的问题了。接下来前程百利小编为考生带来托福阅读词汇题依靠逻辑猜测的方法介绍。让我们一起看看托福阅读词汇题与逻辑的“纠缠”。
首先，一般有助于我们猜测文章中词汇含义的逻辑涉及并列、对比以及因果联系等，但是并列和对比是最容易猜题的逻辑。接下来让我们根据例题来熟悉这种推测方法。
例1：来自TPO37-The Emergence of Civilization
Paragraph 2: A stream deposits its sediment in three environments: Alluvial fans and deltas form where stream gradient (angle of incline) suddenly decreases as a stream enters a flat plain, a lake, or the sea; floodplain deposits accumulate on a floodplain adjacent to the stream channel; and channel deposits form in the stream channel itself. Bars, which are elongated mounds of sediment, are transient features that form in the stream channel and on the banks. They commonly form in one year and erode the next. ivers used for commercial navigation must be recharted frequently because bars shift from year to year. Imagine a winding stream. The water on the outside of the curve moves faster than the water on the inside. The stream erodes its outside bank because the current's inertia drives it into the outside bank. At the same time, the slower water on the inside point of the bend deposits sediment, forming a point bar. A mid-channel bar is a sandy and gravelly deposit that forms in the middle of a stream channel. Most streams flow in a single channel.
In contrast, a braided stream flows in many shallow, interconnecting channels.
The word “accumulate”in the passage is closest in meaning to
O begin
O appear
O build up
O spread
解析： 单词所在句子为“…floodplain deposits accumulate on a floodplain adjacent to the stream channel…”意思是：泛滥平原会在临近河道的地方沉积。这句话是段落首句所说的“three environments”中的一个，和这句话并列的句子有两个“Alluvial fans and deltas form where stream gradient (angle of incline) suddenly decreases as a stream enters a flat plain, a lake, or the sea;”“and channel deposits form in the stream channel itself.”动词都是”form “,所以这里是说沉积物在这里沉积，所以正选是C。
例2: 来自TPO3 The Long-term Stability of Ecosystems
Paragraph 6: Ecologists are especially interested to know what factors contribute to the resilience of communities because climax communities all over the world are being severely damaged or destroyed by human activities. The destruction caused by the volcanic explosion of Mount St. Helens, in the northwestern United States, for example, pales in comparison to the destruction caused by humans. We need to know what aspects of a community are most important to the community’s resistance to destruction, as well as its recovery.
10. The word “pales” in the passage is closest in meaning to
○Increases proportionally
○Differs
○Loses significance
○Is common
解析：单词所在句子为“The destruction caused by the volcanic explosion…, for example, pales in comparison to the destruction caused by humans.”意思是：由火山爆发产生的破坏想比人类的破坏要怎么样。这里有着明显的对比意味。所以解题时就要看一下究竟作者对于人类破坏的态度是怎样的，前面一句”… climax communities all over the world are being severely damaged or destroyed by human activities.”看出来人类活动的破坏是被强调的，所以这里C选项很合适。
以上就是前程百利小编为考生带来的关于托福阅读词汇题和托福阅读文章中的逻辑线索的相关性分析。由此可知，托福阅读词汇题并不难，大家只要能够根据语境下的逻辑来分析，就可以猜出词义。预祝大家托福考试取得好成绩!
