托福tpo51听力conversation1 Biology Experiment Reproduction

托福tpo51听力conversation1 Biology Experiment Reproduction，那么接下来就跟着中国教育在线的小编详细了解一下吧。

Biology Experiment Reproduction托福听力原文翻译及问题答案

一、Biology Experiment Reproduction托福听力原文：

NARRATOR:Listen to part of a conversation between a student and her biology professor.MALE PROFESSOR:So the assignment is to reproduce one of the animal camouflage experiments we read about in our text book.Which experiment did you pick?

FEMALE STUDENT:Well...I was wondering if I could try to reproduce an experiment that's kinda the opposite of what was discussed in the textbook?MALE PROFESSOR:So,instead of how and why an animal might hide itself,you want to do something about why an animal might want to be seen?Hmmm.Tell me more.

FEMALE STUDENT:Well,I got the idea from one of the journals you said we should look at…it's an experiment about,um,they called them eyespots in the article?

MALE PROFESSOR:Eyespots,sure,the patterns on the wings of moths and butterflies that are generally believed to scare off predators because they look like big eyes.

FEMALE STUDENT:Yeah,except the article was about an experiment that disputes that theory.MALE PROFESSOR:Well,we know that the markings do scare the birds,but the idea that the spots look like eyes is,well that's just a commonly held belief.FEMALE STUDENT:So—that's not even based on research?

MALE PROFESSOR:Well,this whole idea of moth or butterfly markings being scary because they look like eyes rests on how we imagine that their predators—like birds—perceive the markings.And we can never really know that.All we can do is observe bird behavior.But tell me more about the experiment.FEMALE STUDENT:OK,so the experiment looked at the shapes of the markings on moth wings.The researchers wanted to know if the markings that were round or eye-shaped were more effective at deterring predators than square or rectangular markings.MALE PROFESSOR:OK…

FEMALE STUDENT:Yeah.So,they attached food to paper models of moths,with different shaped marks drawn on the wings,to see how birds reacted.And what's interesting is,they realized that the round marks were not more effective at scaring birds than other shapes.MALE PROFESSOR:Were they less effective?

FEMALE STUDENT:No,they were about the same...but what researchers did determine is that larger markings are more effective than smaller markings at scaring off prey.They called this phenomenon“visual loudness.”

MALE PROFESSOR:Visual loudness,huh.Well,I guess it's not all that shocking,if you think about it.FEMALE STUDENT:So,anyway,is it OK?Can I repeat this experiment and write about it?MALE PROFESSOR:Yes,I think that'll work.The problem I foresee is,well,where?This is an urban campus...You'll have a hard time finding a good place to set up the experiment.

FEMALE STUDENT:Oh,I-I wasn't planning on doing it on campus.I'm going home for spring break,and my family lives in the country,far from the nearest city.I can set it up in the backyard.

MALE PROFESSOR:Good idea.Except one week is not a lot of time.So you'll need to make some adjustments to have enough data.I'd set up the experiment near a bird feeder,and get in as much observation time as you can.

二、Biology Experiment Reproduction托福听力中文翻译：

旁白：听一个学生和她的生物教授之间的对话。梅尔教授：所以，任务是重现我们在课本中读到的一个动物伪装实验。你选了哪个实验？

女学生：嗯……我想知道我是否可以尝试复制一个实验，这个实验与教科书中讨论的有点相反？男教授：所以，你想做一些事情来解释为什么动物会想被人看到，而不是动物会如何以及为什么会隐藏自己？嗯。告诉我更多。

女学生：嗯，我是从你说我们应该看的一本杂志上得到这个想法的……这是一个关于，嗯，他们在文章中称之为眼斑的实验？

男教授：当然，眼点是飞蛾和蝴蝶翅膀上的图案，因为它们看起来像大眼睛，所以通常被认为能吓跑捕食者。

女学生：是的，但这篇文章是关于一个实验的，这个实验对这个理论提出了质疑。男教授：我们知道斑纹确实会吓到鸟类，但斑点看起来像眼睛的想法，这只是一个普遍持有的信念。女学生：所以这甚至不是基于研究？

男教授：好吧，蛾子或蝴蝶的斑纹之所以令人恐惧，是因为它们看起来像眼睛，取决于我们如何想象它们的食肉动物（如鸟类）感知这些斑纹。我们永远不会真正知道这一点。我们所能做的就是观察鸟类的行为。女学生：好的，所以这个实验观察了蛾翅膀上的斑纹形状。研究人员想知道圆形或眼睛形状的标记是否比方形或矩形标记更有效地阻止捕食者…

女学生：是的。因此，他们将食物附在纸上的蛾子模型上，在翅膀上画上不同形状的标记，以观察鸟类的反应。有趣的是，他们意识到圆形标记在吓唬鸟类方面并不比其他形状更有效？

女学生：不，它们大致相同……但研究人员确定，较大的标记比较小的标记更能有效地吓跑猎物。他们称这种现象为“视觉响度”

男教授：视觉响度，嗯。好吧，如果你仔细想想，我想这并没有那么令人震惊。女学生：那么，无论如何，这可以吗？我可以重复这个实验并写下来吗？男教授：是的，我想这会管用。我预见到的问题是，好吧，在哪里？这是一个城市校园……你很难找到一个好地方来设置实验。

女学生：哦，我不打算在校园里做。我要回家度春假，我家住在乡下，离最近的城市很远。我可以把它放在后院。

男教授：好主意。除了一周的时间不多。因此，您需要进行一些调整以获得足够的数据。我在喂食器附近设置了实验，并尽可能多地投入观察时间。

三、Biology Experiment Reproduction托福听力问题：

1.Why does the student talk with the professor?

A.She wants permission to revise an experiment that she conducted earlier.

B.She has a question about the findings of an experiment in the textbook.

C.She wants to reproduce an experiment that is not in the textbook.

D.She would like some advice about how to study butterfly and moth behavior.

2.What does the professor say is a common assumption about certain markings on butterfly and moth wings?

A.That the markings are usually hidden from view

B.That the markings attract some kinds of birds more than others

C.That some birds perceive the markings as large eyes

D.That butterflies and moths use the markings to attract mates

3.What were the results of the experiment that the student describes?[Click on 2 answers.]

A.Birds reacted to round markings the same way they reacted to square markings.

B.Large markings scared birds more than small markings did.

C.Most birds ignored markings that looked like eyes.

D.Birds were attracted to more colorful markings.

4.Why does the professor mention a bird feeder?

A.To suggest a strategy that may help the student carry out her task successfully

B.To recommend a place on campus that is suitable for the student's project

C.To discuss another experiment that has yielded surprising results

D.To point out a problem in the design of the original experiment

5.What can be inferred about the student when she says this:

A.She is skeptical about what the professor just told her.

B.She just realized that she designed her experiment incorrectly.

C.She is worried that she misunderstood something that she read.

D.She had assumed that there was scientific evidence for the theory.

四、Biology Experiment Reproduction托福听力答案：

A1:正确答案：C

A2:正确答案：C

A3:正确答案：AB

A4:正确答案：A

A5:正确答案：D