随着生活水平的提高，人们越来越关注自己的生活质量，有些食物会影响我们的大脑，今天托福听力小编为大家准备了一篇相关的阅读，快来看一看吧!一石二鸟，健康问题和托福听力背景材料都有了。
We know junk food can change the way bodies are shaped. Now, a study finds that those irresistible sweet and salty concoctions may also change the way brains are wired—at least in rats.
我们知道垃圾食品能够改变身体的构成。现在，一项研究发现甜和咸混合的美食可以改变大脑的网状方式，至少可以改变老鼠的网状方式。
Researchers divided rats into two groups—one labeled Cafeteria, the other called Chow. Both groups got a typical rat food diet, but the Cafeteria rats also got a bonus: meat pies, cakes and cookies.
研究者把老鼠分为两部分，一部分标注“自助餐厅”，另一部分叫做“乔”。两组都喂给典型的鼠食食物，但是“自助餐厅”这组又被喂了肉、蛋糕、和甜点。
Both rat groups gained weight. But the Cafeteria rats gained significantly more than the Chows did—nearly half a pound more, which is a big body burden for a rat. But more important, over two weeks time the Cafeteria rats seemed to care less and less about even seeking out a balanced diet. This new behavior endured even after the rats were returned to their more healthy fare.
两组的老鼠体重都增加了。“自助餐厅”的老鼠明显比“乔”的老鼠重，重了有一磅多，这是一个大的胖老鼠。但是，更重要的是，两个星期的时间，“自助餐厅”的老鼠已经越来越不关心饮食平衡了。这种新的行为忍受了巨多的痛苦，即使使它们回到他们更加健康的状况。
The researchers think junk-food diets cause lasting changes in the rewards circuits part of the brain—which plays a big role in decision-making. So if you’re a regular cookie eater and the next time you mindlessly reach for a cookie you wonder why you can’t help yourself—well, it could be because you’re not in charge, your rewired brain is.
研究者认为垃圾食品会引起大脑电路的持续的变化。如果你是一个甜食主义者，下次你在吃甜食的时候就会情不自禁，控制不住自己，这时是你正在改变你的大脑布局。
关于托福听力背景材料就先为大家介绍到这里了，希望大家能够认真体会，养成良好的饮食习惯，更多精彩内容小编稍后为您呈现。最后，小编祝大家在托福考试中取得好成绩！
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