Foundations Reading 5B

Chap 10

第10章

Reading 5B AT THE SCENE OF A CRIME It's 5:30 a.m., and your phone rings. A police officer says someone broke into a store and took some expensive items. They need you right away. It is your job to study the whole scene for clues that will help catch the thief. You are a crime scene investigator, and the game is on. Outside the store, you see a broken window, but there is no glass on the street. There are shoeprints, and marks made by a vehicle's tires. You look at the shoeprints. They're large, so you're likely looking for a man. You photograph the shoe's pattern. This can tell you the type of shoe. You then measure the space between the shoeprints. You now know how long the person's steps were. This gives you an idea of how tall the thief was. As you follow the shoeprints over to the tire marks, the spaces between the steps get bigger. They lead to the passenger's side of the vehicle. Now you know the thief probably didn't work alone. You photograph the tire marks. They can help you find out the type of vehicle and the direction it went. The most important clues will come from a person's body. You find some fingerprints near the broken window. Using a computer, you can compare these prints against millions of others. You also find a hair. You keep it, because you know hair contains a person's DNA. You can compare this with other people's DNA, too. If you find a match for the fingerprint or the DNA, you will know who was in the store. Will you find the thief? You now have a lot of information so it's possible. For a crime scene investigator, it's all in a day's work.

阅读5B 在犯罪现场 现在是早上5:30，你的电话响了。 一名警察说，有人闯入一家商店，拿走了一些贵重物品。 他们需要你马上。 你的工作是研究整个场景，寻找有助于抓住小偷的线索。 你是一名犯罪现场调查员，游戏开始了。 在商店外面，你看到一扇破窗户，但街上没有玻璃。 有鞋印，还有车辆轮胎留下的痕迹。 你看看鞋印。 它们很大，所以你可能在找男人。 你拍下鞋子的图案。 这可以告诉你鞋子的类型。 然后测量鞋印之间的间距。 你现在知道这个人的脚步有多长了。 这让你知道小偷有多高。 当你沿着鞋印走到轮胎痕迹时，台阶之间的间距会变大。 它们通向车辆的乘客侧。 现在你知道小偷可能不是一个人干的。 你拍摄轮胎痕迹。 他们可以帮助你找出车辆的类型和行驶方向。 最重要的线索将来自一个人的身体。 你在破窗户附近发现了一些指纹。 使用电脑，你可以将这些指纹与数百万其他指纹进行比较。 你也发现了一根头发。 你留着它，因为你知道头发中含有一个人的DNA。 你也可以将其与其他人的DNA进行比较。 如果你找到指纹或DNA的匹配，你就会知道谁在商店里。 你能找到小偷吗？ 你现在有很多信息，所以这是可能的。 对于犯罪现场调查员来说，这都是一天的工作。

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