今天前程百利小编为大家分享的是托福听力新题材料来源。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，快来看一下吧！
We all emit slightly different brain waves in response to stimuli, and researchers say that an individual’s specific "brain prints" could be used to validate our identities.
Biometric technology was once the stuff of sci-fi—how many movies show someone having their hand or eye scanned to get entry into a secured facility? But today biometric tech can be found in millions of people's pockets—as the fingerprint scanner on an iPhone.
Of course, fingerprint scanning isn't foolproof. Hackers have stolen fingerprints from photos, and used fake prints to fool Apple's touch ID. Plus, there’s always the brute force method, like the time a gang in Malaysia cut off a guy's fingertip—with a machete—to interface with the fingerprint-recognition system on the victim's Mercedes.
But there's a lesser-known biometric, that might be a bit harder to counterfeit: brainwaves. "In the biometric textbook table of contents, often the brain biometrics were listed as ‘Esoteric Biometrics.’ So I guess people have thought about it for many years, but it's been considered sort of esoteric." Sarah Laszlo, a psychologist at Binghamton University, part of the State University of New York.
To test the potential of brainwave biometrics, Laszlo and her colleagues attached electrodes to the scalps of 45 volunteers. They then recorded an electroencephalogram, or EEG—a reading of the brain's electrical activity—as the subjects watched acronyms flash on a computer screen. Turns out that each acronym—FBI, DVD, VCR—sets off a unique pattern of activation in your brain, which corresponds to an electrical signature. And each person has slightly different so-called "brain prints." Different enough that computers were able to uniquely identify the study volunteers by their brainwaves 94 percent of the time. That effect held up when the subjects were retested six months later.]
Of course 94 percent accuracy won't cut it at the NSA. "I was told by a researcher at a secure cyberspace conference in January that there's something called the rule of 5s. Which means you need 99.99999—five nines, the rule of five—to be used as a practical biometric."
But Laszlo and her colleagues are trying out new ideas for upping the test's accuracy. Like showing "pictures of polarizing celebrities, like Kim Kardashian or Kanye West. And also images of foods that some people tend to really like and some people tend to really stay away from, things like sushi." The idea being that polarizing images might elicit more specific brainprints.
As for blackmail? "A brainprint, unlike a fingerprint or a retinal scan, is something that would be immune to sort of a gun-to-the-head or blackmail sort of situation. Brain activity changes if you're stressed. That's very well known. And you can cut someone's finger off. But you can't cut someone's brain out. You can't do it." Future spies will simply have to find a way to replicate the brainwaves of their foes themselves. And, actually, one of Laszlo's students is already studying how to do just that.
疑难词汇：
Emit vt. 发出，放射;发行;发表;
slightly different稍有不同
validate vt. 证实，验证;确认;使生效
biometric adj. 生物计量的n. 计量生物学
foolproof adj. 十分简单的;十分安全的;不会错的n. 极简单;安全自锁装置
brute adj. 残忍的;无理性的n. 畜生;残暴的人
fingertip n. 指尖;指套
counterfeit vt. 伪造，仿造;假装，伪装vi. 仿造;假装n. 赝品;冒牌货;伪造品adj. 假冒的，伪造的;虚伪的
esoteric adj. 秘传的;限于圈内人的;难懂的
electrode n. [电] 电极;电焊条
cyberspace n. 网络空间;赛博空间
upping站起身，提高(价格等)(up的现在分词)
长难句解析：
1. We all emit slightly different brain waves in response to stimuli, and researchers say that an individual’s specific "brain prints" could be used to validate our identities.
难句类型：
that引导的定语从句
句子主干：
We all emit slightly different brain waves
难句拆分：
that an individual’s specific "brain prints" could be used to validate our identities, that引导的宾语从句作say的宾语。
2. Biometric technology was once the stuff of sci-fi—how many movies show someone having their hand or eye scanned to get entry into a secured facility?
难句类型：
How many引导的疑问句
句子主干：
Biometric technology was once the stuff of sci-fi
难句拆分：
how many movies show someone having their hand or eye scanned to get entry into a secured facility?，是一个疑问句。having their hand or eye scanned状语成分。
文本结构特点：
本篇文章主要讲的是未来有可能使用“脑波”进行身份识别，相对于指纹识别，这种“脑波”识别要更加的方便，而且会更加的安全。如果想要窃取信息必须要研究脑波的复制，所以“脑波”识别还是很安全的。
好了，以上就是前程百利小编为大家整理的托福听力新题材料“脑电波”将成为未来的安全证件。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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