托福听力tpo9原文 lecture［精品pdf］.pdf

http:// 托福听力 TPO19 原文 Lecture2 下面就让小编来为大家介绍一下托福听力 TPO19 原文中 Lecture 2 的文本内容吧,大家要好好把握,这些都是非常有价值的材料,同时,大家也可以登录前程百利论坛进行 TPO 练习辅导,希望能够给准备托福听力的同学带来帮助。 TPO 19 Lecture 2 Astronomy Professor : So how many of you have seen the Milky Way, the Milky Galaxy in the sky? You, you have? Student : Yeah, I was camping, and there was no moon that night, it was super dark. Professor : Anybody else? Not too many. Isn ’t that strange that the Milky Way is the galaxy that the earth is in, and most of us have never seen it? Now, what ’s the problem here? Student : Light pollution, right? From street lights and stuff ... Professor : Yes, Especially unshielded street light, you know, ones that aren ’t pointed downward. Now, here ’s an irony, the buiding we are in now, the astronomy building not far from our observatory, has unshielded lights. Student : So the problem is pretty widespread. Professor : It is basically beyond control, as far as expecting to view the night sky anywhere near city, I mean. I have lived around here my whole life. And I have never seen the Milky Way within city limits, and I probably never will. There isa price for progress, eh? But let ’s think beyond light pullution, that ’s only one kind ofa technological advance that has interfered with astronomical research. Can anyone think of another? No? Ok, let ’ s look at it this way, we don ’t only gain information by looking at t