今天前程百利小编为大家分享的是托福听力新题材料。最近托福听力考试中出现了一些新题，那这些新题材料的来源是什么呢?大家都知道托托福听力来源于学生的课堂内容和校园生活，所以小编特意为大家整理托福听力新题的材料来源，快来看一下吧!
In west Africa researchers observed wild chimps seek out and drink fermented tree sap left outside by humans.
Chimpanzees. They’re much like us genetically, anatomically and, as it turns out, cock tailogically. Because we finally have solid evidence that chimps drink alcohol. So say researchers who have observed wild chimpanzees throw back fermented tree sap. The findings are served up in the Royal Society journal Open Science. [Kimberley J. Hockings et al, Tools to tipple: ethanol ingestion by wild chimpanzees using leaf-sponges]
Some biologists think that the reason we humans like adult beverages is because our primate ancestors were partial to super ripe fruits, which are high in calories and often in ethanol. But there’s one big problem with this so-called drunken monkey hypothesis: apes had not really been seen downing alcohol in the wild. That is, until now.
The researchers were studying chimps in Bossou, west Africa. In this region, people tap palm trees and allow the collected sap to ferment in small plastic containers, which they cover with leaves to prevent contamination.
Turns out, for chimps who hanker hooch, the leaves are like the straw in a banana daiquiri—the apes take the leaves, crumple them up, dip them in the sap and then suck them dry.
The drinkers were mostly male, shockingly, accounting for 34 of the 51 bouts of boozing observed, and they’d consume a couple of liters of the fermented brew each time they bellied up to the bar. I mean tree.
Whether chimps are simply taking advantage of an easily acquired, calorie-rich liquid or they especially enjoy the sap’s sweet flavor—or intoxicating effects—is not known. But the questions call for another round—of research.
疑难词汇：
Fermented adj. 酿造;已发酵的v. 使…发酵;动乱(ferment的过去分词)
Sap n. [植] 树液;精力，元气;活力;坑道vt. 使衰竭，使伤元气;挖掘以破坏基础vi. 挖坑道
Genetically adv. 从遗传学角度;从基因方面
Anatomically adv. 结构上;解剖学上
Solid adj. 固体的;可靠的;立体的;结实的;一致的n. 固体;立方体
ethanol n. [有化] 乙醇，[有化] 酒精
ingestion n. 摄取;吸收;咽下
be partial to对…偏袒的;对…过分错爱的
drunken adj. 喝醉的;酒醉的;常醉的
ape n. [脊椎] 猿;傻瓜;模仿者vt. 模仿;抢台词adj. 狂热的
contamination n. 污染，玷污;污染物
hanker vi. 向往，追求;渴望，期望
hooch n. 烈酒;私酒
daiquiri n. 一种鸡尾酒，代基里酒
长难句解析：
1. So say researchers who have observed wild chimpanzees throw back fermented tree sap.
难句类型：
Who引导的定语从句
句子主干：
So say researchers
难句拆分：
who have observed wild chimpanzees throw back fermented tree sap，Who引导的定语从句
2. Whether chimps are simply taking advantage of an easily acquired, calorie-rich liquid or they especially enjoy the sap’s sweet flavor—or intoxicating effects—is not known.
难句类型：
Whether...or
句子主干：
It is not known.
难句拆分：
Whether...or引导两个句子，表示或者…或者;Whether...or引导的两个句子作整个句子的主语。
文本结构特点：
本篇文章主要讲的是黑猩猩很喜欢和酒精饮料，那是因为它们在基因上与人类很形似。研究已经证实黑猩猩喝了酒精饮料。但黑猩猩是否喜欢吃甜的东西还需要进一步的研究。
好了，以上就是前程百利小编为大家整理的备考托福听力背景材料以及专业词汇的学习。大家学会了吗?希望能在备考托福的路上助大家一臂之力。预祝大家在托福考试中取得好成绩。
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