说到托福阅读备考，大家首先想到的肯定是OG和TPO。作为托福必不可少的备考神器，通过TPO练习来更好的适应考试的节奏。本文对TPO17 Animal Signals in the Rain Forest这篇文章的题材和部分题目进行了简单的分析，希望能够给正在备考托福阅读的大家带来一些参考的作用。
TPO17 Animal Signals in the Rain Forest
文章题材：自然学科——雨林中的生物信号
常见词汇：
problematic [.prɔbli'mætik] adj. 问题的，有疑问的
advertise ['ædvətaiz] v. 登广告，为 ... 做广告，宣传
inhabit [in'hæbit] v. 居住于，占据，栖息
brush [brʌʃ] n. 刷子，画笔n. 灌木丛
considerable [kən'sidərəbl] adj. 相当大的，可观的，重要的
advantage [əd'vɑ:ntidʒ] n. 优势，有利条件vt. 有利于
signal ['signl] n. 信号，标志v. (发信号)通知、表示
essential [i'senʃəl] n. 要素，要点adj. 必要的，重要的
predominate [pri'dɔmineit] v. 占优势，支配，统治
lizard ['lizəd] n. 蜥蜴，蜥蜴皮
易错题解析：
Paragraph 4: Very little light filters through the canopy of leaves and branches in a rain forest to reach ground level—or close to the ground—and at those levels the yellow-to-green wavelengths predominate. A signal might be most easily seen if it is maximally bright. In the green-to yellow lighting conditions of the lowest levels of the forest, yellow and green would be the brightest colors, but when an animal is signaling, these colors would not be very visible if the animal was sitting in an area with a yellowish or greenish background. The best signal depends not only on its brightness but also on how well it contrasts with the background against which it must be seen. In this part of the rain forest, therefore, red and orange are the best colors for signaling, and they are the colors used in signals by the ground-walking Australian brush turkey. This species, which lives in the rain forests and scrublands of the east coast of Australia, has a brown to-black plumage with bare, bright-red skin on the head and neck and a neck collar of orange-yellow loosely hanging skin. During courtship and aggressive displays, the turkey enlarges its colored neck collar by inflating sacs in the neck region and then flings about a pendulous part of the colored signaling apparatus as it utters calls designed to attract or repel. This impressive display is clearly visible in the light spectrum illuminating the forest floor.
7. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
○When an animal is signaling in an area with green-to yellow lighting condition. It’s signal will not be visible if the background is brightly lit.
○In the lowest levels of the forest, an animal's signals are not easily seen unless there is a yellowish or greenish background.
○In the green-to-yellow lighting conditions at the lowest levels of the forest, only signals that are themselves green or yellow will be bright enough to be seen in most areas.
○Although green and yellow would be the brightest colors near the forest floor, these colors would make poor signals whenever the forest background was also in the green-to-yellow range.
题型：句子简化题。答案是(D)
解析：“In the green-to yellow lighting conditions of the lowest levels of the forest”，做状语，“yellow and green would be the brightest colors”前一分句的主句。“But”做连词，连接另一分句，“when an animal is signaling”做时间状语，“these colors would not be very visible”做后一分句主句，“if the animal was sitting in an area with a yellowish or greenish background”条件状语从句。所以句子主干为：Yellow and green would be the brightest colors, but these colors would not be very visible. 原句可翻译为：在热带雨林最底层黄绿光的条件下，黄色和绿色自然是最明亮的颜色。在动物发出视觉信号的时候，如果它是处于偏黄或偏绿的背景环境中，那么视觉信号就不容易被看到了。D选项，尽管绿黄色最明亮，但是这些颜色并不是最好的signal，因为森林背景也在绿黄的范围内。与原文意思相一致，正确。
易错选项：(C)。
9. Which of the following can be inferred from paragraph 4 about yellow and green colors compared with red and orange colors at the bottom of the forest?
○Yellow and green are better colors for signaling than red and orange colors.
○Orange and red are brighter colors than yellow and green.
○Yellow and green are likely to be more common in the background than red and orange.
○Orange and red colors do not contrast as well with the forest floor as yellow and green do.
题型：推论题。答案是(C)
解析：题干对比“yellow and green colors”和“red and orange color”，先在原文中寻找黄绿光和红橙光的信息，再由各选项的关键词准确定位原文依次排除。C选项的关键词common定位于第一句话 “Very little light filters through the canopy of leaves and branches in a rain forest to reach ground level—or close to the ground—and at those levels the yellow-to-green wavelengths predominate”，predominate一词表明在到达地面的光中，黄绿光的比重最大，可推断出同红橙光相比，黄绿光更普遍，C正确。
以上就是小编带来的托福阅读浅析之TPO17 Animal Signals in the Rain Forest,希望能够帮助大家进行备考。更多托福考试资讯请关注前程百利。
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