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2018年6月大学英语四级考试CET4听力原文:试卷一听力篇章1(沪江网校版)

作者:新都教育    文章来源:新都网    点击数:    更新时间:2018/6/16

Passage 1

 

Have you ever felt like you would do just about anything to satisfy your hunger? A new study in mice may help to explain why hunger can feel like such a powerful motivating force. In the study, researchers found that hunger out weights other physical drives including fear, thirst and social needs. To determine which feeling won out, the researchers did a series of experiments. In one experiment, the mice were both hungry and thirsty. When given the choice of either eating food or drinking water, the mice went for the food, the researchers found. However, when the mice were well-fed but thirsty, they opted to drink according to the study. In the second experiment, meant to pit the mice’s hunger against their fear, hungry mice were placed in a cage that has certain fox scented areas and other places that smell safer; in other words, not like an animal that could eat them but also had food. It turned out that when the mice were hungry, they ventured into the unsafe areas for food. But when the mice were well-fed, they stayed in the area of the cage that were considered safe. Hunger also out weights the mice’s social needs, the researchers found. Mice are usually social animals and prefer to be in the company of other mice according to the study. When the mice were hungry, they opted to leave the company of other mice to go get food.

 

Q16: What is the researchers’ purpose in carrying out the series of experiments with mice?

Q17: In what circumstances do mice venture into unsafe areas?

Q18: What is said about mice at the end of the passage?

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