您IP所在的地区,暂不支持官方真题素材

建议使用其他功能进行听力练习

返回
小站备考
托福
托福听力
Official51听力真题

托福official51听力lecture4 Heliocentric Theory原文解析+翻译音频

展开
Tip:单击查看句义;划选/双击查生词

[00:00.00]NARRATOR: Listen to part of a discussion in a history of science class. [00:04.66]The class is discussing the heliocentric theory.[00:09.00]MALE STUDENT: What I find really difficult to understand is why the heliocentric theory… Um, why it wasn’t, like, believed by everybody right away.
[00:18.60] MALE PROFESSOR: Well, one thing that’s hard to do is to sort of see things from the perspective of someone who’s hearing that theory for the first time. [00:27.00] I mean today we tend to assume that the moment the heliocentric theory was laid out, the idea that the Sun, not the Earth, was the center of the solar system, that, you know, you’d have to be in denial not to accept it. [00:40.60]But it really wasn’t that easy.[00:42.30]MALE STUDENT: But the idea that the Earth wasn’t the center of the universe… that had been tossed around for, like, centuries, right? [00:49.00]I mean, lots of people had had the idea.[00:51.30] MALE PROFESSOR: Yes, that’s true, going all the way back to the ancient Greeks. [00:55.85]But in Europe when Galileo championed it in the seventeenth century, due in part to his discoveries using a telescope, there still was some major resistance to it.[01:06.60]MALE STUDENT: But I still don’t understand why. I mean, isn’t it obvious?
[01:10.25] MALE PROFESSOR: Well…, despite Galileo’s ingenious arguments in support of the heliocentric theory, there were still a lot of reasons why people of that period couldn’t buy into it. [01:21.35]Remember, we’re talking about 400 years ago. So, uh, let’s think about a few of those reasons, OK?
[01:28.60] So, first of all, they could work out that if the Earth was going around the Sun, then it had to be traveling at many thousands of kilometers per hour. [01:37.45]And that was just beyond anything anyone could understand. [01:41.00]You know, they could understand riding a horse or walking. Maybe they could get up to 30, 32 kilometers per hour, [01:48.00]but tens of thousands of kilometers per hour? [01:51.20] That was just crazy. [01:52.80]So, to many people, whatever’s going on, it couldn’t be that.[01:58.00]FEMALE STUDENT: Hmm. So people didn’t believe the heliocentric theory… because it was so hard to believe?[02:04.20] MALE PROFESSOR: Exactly. But there were more scientific kinds of reactions, as well. [02:09.00]’Cause, look, if you’ve ever been on a carousel, or you’re on a ride at an amusement park, and you’re on something that is going round and round and round. Two things, alright? [02:19.00]One, you know you’re moving, there’s no doubt. [02:21.90] And the other thing is, you know, that unless you hold on tight, you’re gonna go flying out because of centrifugal force, right?[02:29.30]FEMALE STUDENT: So, if I understand you, for the average person 400 years ago, there was no evidence that we’re moving at high speed, right? [02:37.03]Since everything was securely on the ground, and no one was flying off into space?[02:41.38] MALE PROFESSOR: Yes. And in particular—[02:43.78]and this was one specific difficulty for people in the period—even if they thought that there was some sorta force that maybe kept you and me and buildings and things on the surface of the Earth, [02:56.00] their theory about the nature of the atmosphere was that nothing was holding it down. [03:02.00] So, if—if you can understand that way of thinking, then clearly, if the Earth, was moving at great speed, we should’ve lost all our atmosphere a long time ago. [03:12.15]You know, it would be, like, trailing away behind us.[03:16.00]And so I wanna try a little thought experiment. Because I—I think that what we’ll find is that some of us have ideas about motion that actually fit with antiheliocentrism.[03:29.00]MALE STUDENT: Antiheliocentrism! [03:31.92]No way. This is the twenty-first century.
[03:34.18] MALE PROFESSOR: Well, then, let’s see. [03:36.60] So, picture the following: [03:39.30]you’re at the equator moving at sixteen-hundred kilometers per hour, OK? [03:44.30] And you drop something small and light, like a matchstick, for example. [03:49.10]Where’s it gonna land?[03:51.00]MALE STUDENT: That’s easy. It’ll be long gone. [03:53.70]The matchstick is so light, it’ll fly right out of my hand and end up way behind me somewhere.[03:58.90] MALE PROFESSOR: Ahh…actually, that matchstick you dropped? It’ll land right at your feet.
[04:05.60]MALE STUDENT: What?![04:06.40] MALE PROFESSOR: Well, let’s think about it. [04:08.60]You forgot to consider that the Earth’s rotating at sixteen-hundred kilometers per hour at the equator… and you, me, the air, and that matchstick, we’re all moving together at the same speed, even though it doesn’t seem or look or feel like we’re moving.[04:24.00]So class, clearly, even today, we actually have some inclination to think that if the Earth were moving around at a great speed, we oughta see signs of it. [04:34.60] Perhaps now you’re less inclined to dismiss those who once found heliocentrism so hard to believe.[04:41.00]OK, let’s move on…

1.What is the professor's main purpose in the discussion?

你的答案:
正确答案:D
题目解析:
 后才能查看题目解析,还没有账号? 马上注册
此题出处是: Professor: Well, despite Galileo’s ingenious arguments in support of the heliocentric theory, there was still a lot of reasons why people of that period couldn’t buy into it. Remember, we are talking about four hundred years ago, so ah, let’s think about a few of those reasons, Ok? 这里教授明确说明要开始讨论日心说之所以不被以前的人们所相信的原因,选项D合适。选项A说是为了比较古今关于太阳系的理论,选项B是为了讲日心说被人们接受的天文学研究,选项C说是为了评估十七世纪天文学的改变,都不合适。选择D。

学习页面

Medi

terr

anean

加强 + 政府 + 名词后缀

加强的政府——管理

原文例句

加入生词

本文生词 0

色块区域是你收藏过的生词;

查询次数越多,颜色越深哦~

显示文中生词

登录后才能收藏生词哦,现在登录注册>

本文重点词 45

文中加粗单词为本文重点词;

根据词频与核心词范围精心挑选,托福考试必掌握词汇。

显示文中重点词
学习本文词汇

文中划选/双击的生词、加粗重点词已收纳至词盒

可随时点击词盒查看哦~

只有在词句精学模式下才能开启词盒功能哦~

我知道了

词盒
收藏
笔记
我的笔记
5000
保存
反馈