Passage1 饥饿的影响
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 outweighed 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 had certain Fox centered areas and other places that smelled 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 areas of the cage that were considered safe。 Hunger also outweighed 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 Su‘s experiments with mice？（标红的位置没听清）
Q17。 In what circumstances do mice venture into unsafe areas？
Q18。 What is said about mice at the end of the passage？
你有没有想过你会为了满足饥饿感不择手段？一项对老鼠的新研究有助于解释为什么饥饿能让人感觉到这种强大的推动力。在这项研究中，研究人员发现饥饿对人的影响甚至超过了其他身体因素，包括恐惧、口渴和社会需求。为确定哪种感觉影响更胜一筹，研究人员做了一系列的实验。
在实验中，研究者发现，当老鼠们又饿又渴时，它们在食物和水间会选择食物。然而，当小鼠很饱但口渴时，他们会选择喝水。
第二个实验的目的是让老鼠们对饥饿感到恐惧。饥饿的老鼠被放置在一个笼子里，那里有狐狸集中的区域和其他气味更安全的地方。换句话说，那里让人感觉不会有其它生物吃掉它们，同时也有食物。结果，当老鼠饿了的时候，他们会冒险进入不安全的地方寻找食物。但是当给老鼠喂食时，它们会呆在被认为安全的笼子里。研究人员发现饥饿对老鼠的影响也超过了社会需求。根据这项研究，老鼠通常是群居动物，喜欢和其他老鼠在一起。当老鼠感到饥饿，他们会选择离开群体去寻找食物食物。
Q16。 研究人员进行实验的目的是什么？（标红的位置没听清）
Q17。 老鼠在什么情况下冒险进入不安全的地区？
Q18。 关于通道末尾的老鼠说什么？
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