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剑13Tset1雅思听力原文+题目+答案:Section 3

2020-07-15 13:58:24来源:网络 柯林斯词典

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Test 1-Section 3
[00:59.43Emma: We've got to choose a topic for our experiment, haven't we, Jack?
[01:04.52Were you thinking of something to do with seeds?
[01:07.36Jack: That's right.
[01:09.11I thought we could look at seed germination - how a seed begins to grow.
[01:14.30Emma: OK.
[01:15.48Any particular reason?
[01:17.44I know you're hoping to work in plant science eventually ...
[01:20.73Jack: Yeah, but practically everything we do is going to feed into that.
[01:25.33No, there's an optional module on seed structure and function in the third year that I might do, so I thought it might be useful for that.
[01:35.79If I choose that option, I don't have to do a dissertation module.
[01:40.83Emma: Good idea.
[01:42.20Jack: Well, I thought for this experiment we could look at the relationship between seed size and the way the seeds are planted.
[01:51.19So, we could plant different sized seeds in different ways, and see which grow best.
[01:57.71Emma: OK.
[01:59.19We'd need to allow time for the seeds to come up.
[02:02.03Jack: That should be fine if we start now.
[02:04.87A lot of the other possible experiments need quite a bit longer.
[02:10.09Emma: So that'd make it a good one to choose.
[02:13.52And I don't suppose it'd need much equipment; we're not doing chemical analysis or anything.
[02:20.44Though that's not really an issue, we've got plenty of equipment in the laboratory.
[02:25.60Jack: Yeah.
[02:25.89We need to have a word with the tutor if we're going to go ahead with it though.
[02:31.14I'm sure our aim's OK.
[02:33.63It's not very ambitious but the assignment's only ten percent of our final mark, isn't it?
[02:40.77But we need to be sure we're the only ones doing it.
[02:44.87Emma: Yeah, it's only five percent actually, but it'd be a bit boring if everyone was doing it.
[02:52.16Jack: Did you read that book on seed germination on our reading list?
[02:56.59Emma: The one by Graves?
[02:58.73I looked through it for my last experiment, though it wasn't all that relevant there.
[03:04.12It would be for this experiment, though.
[03:06.76I found it quite hard to follow - lots about the theory, which I hadn't expected.
[03:12.69Jack: Yes, I'd been hoping for something more practical.
[03:17.36It does include references to the recent findings on genetically-modified seeds, though.
[03:23.20Emma: Yes, that was interesting.
[03:25.26Jack: I read an article about seed germination by Lee Hall.
[03:29.52Emma: About seeds that lie in the ground for ages and only germinate after a fire?
[03:35.06Jack: That's the one.
[03:36.64I knew a bit about it already, but not about this research.
[03:41.78His analysis of figures comparing the times of the fires and the proportion of seeds that germinated was done in a lot of detail - very impressive.
[03:53.01Emma: Was that the article with the illustrations of early stages of plant development?
[03:58.79They were very clear.
[04:00.48Jack: I think those diagrams were in another article.
[04:45.69Emma: Anyway, shall we have a look at the procedure for our experiment?
[04:50.01We'll need to get going with it quite soon.
[04:52.38Jack: Right.
[04:53.63So the first thing we have to do is find our seeds.
[04:58.17I think vegetable seeds would be best.
[05:01.43And obviously they mustn't all be the same size.
[05:05.48So, how many sorts do we need?
[05:08.64About four different ones?
[05:10.90Emma: I think that would be enough.
[05:12.72There'll be quite a large number of seeds for each one.
[05:16.67Jack: Then, for each seed we need to find out how much it weighs, and also measure its dimensions, and we need to keep a careful record of all that.
[05:27.42Emma: That'll be quite time-consuming.
[05:30.02And we also need to decide how deep we're going to plant the seeds - right on the surface, a few millimetres down, or several centimetres.
[05:39.25Jack: OK.
[05:40.30So then we get planting.
[05:42.53Do you think we can plant several seeds together in the same plant pot?
[05:47.61Emma: No.
[05:48.57I think we need a different one for each seed.
[05:51.66Jack: Right.
[05:53.52And we'll need to label them - we can use different coloured labels.
[05:58.07Then we wait for the seeds to germinate - I reckon that'll be about three weeks, depending on what the weather's like.
[06:06.63Then we see if our plants have come up, and write down how tall they've grown.
[06:12.06Emma: Then all we have to do is look at our numbers, and see if there's any relation between them.
[06:17.24Jack: That's right.
[06:17.89So ...

翻译

艾玛:杰克,我们应该为我们的实验选择一个主题了,不是吗?
你有考虑与种子相关的内容吗?
杰克:是的。
我想我们可以观察种子的萌发——种子是如何开始生长的。
艾玛:好的。
有什么特别的原因吗?
我知道你希望最后能在植物科学领域工作……
杰克:是这样的,实际上我们所做的一切都是为了实现这个。
第三年的时候我可能会上一个关于种子结构和功能的选修课。我认为它会对这门课有用。
如果我选择这门课,我就不需要写论文了。
艾玛:是个好主意。
杰克:嗯,我认为在这个实验中,我们可以看看种子大小和种子种植方式之间的关系。
因此,我们可以以不同的方式种植不同大小的种子,看看哪种方式生长得最好。
艾玛:好。
我们需要留出时间让种子萌发。
杰克:现在开始应该可以。
毕竟许多其他可能的实验会需要更长的时间。
艾玛:所以这会是一个很好的选择。
而且我认为它不需要太多设备;我们不需要做化学分析或其他事情。
虽然这并不是什么大问题,我们的实验室里有很多设备。
杰克:没错。
如果我们要继续这样做,我们需要与导师沟通一下。
我确信我们的目标没问题。
虽然它不是很宏大,但这个实验只占我们最终成绩的百分之十,不是吗?
不过我们需要确保我们是唯一做这个实验的人。
艾玛:是的,实际上只有百分之五,但如果每个人都这样做这个实验,那就有点无聊了。
杰克:你在我们的阅读清单上读过那本关于种子萌发的书吗?
艾玛:格雷夫斯写的那本?
我做最后一次实验的时候查阅过,虽然它并不是那么相关。
但是,与这个实验是很相关的。
我发现这本书很难理解——关于理论的内容很多,这是我没想到的。
杰克:是呢,我一直希望有一些更实际的东西。
不过,它包括了一些近期转基因种子研究成果的参考文献。
艾玛:是这样的,很有意思呢。
杰克:我读了一篇李霍尔关于种子萌发的文章。
艾玛:是关于落在地上多年的种子,只有在火灾后才会发芽的那篇吗?。
杰克:就是那个。
我已经了解了一点,但不是关于这项研究。
他的数据分析非常的细致,详细对比了火灾的次数和种子发芽的比例——令人印象深刻。
艾玛:是有植物发展早期阶段图示的那篇文章吗?
它们非常清晰。
杰克:我记得那些图表在另一篇文章中。
艾玛:无论如何,我们应该看一下我们实验的流程吧?
很快就需要着手去做了。
杰克:对。
所以我们要做的第一件事就是找到种子。
我认为蔬菜种子最好。
自然,它们的大小不必要相同。
那么,我们需要多少种呢?
大约四种不同的?
艾玛:我认为这样足够了。
每个种类都会有相当大数量的种子。
杰克:接下来,对于每粒种子,我们需要测量它的重量和尺寸,并且需要仔细记录所有的数据。
艾玛:那会非常耗时。
我们还需要决定我们要把种子种在多深的地方——是种在地表,还是种几毫米深,或者几厘米深。
杰克:不错。
然后我们就可以开始种植了。
你觉得我们可以在同一个花盆里种几粒种子吗?
艾玛:我觉得不可以。
我认为每粒种子都应该单独种植。
杰克:好吧。
我们需要给它们贴标签——可以使用不同颜色的标签。
然后我们就可以等待种子发芽——我估计大约需要三周,这取决于天气情况。
我们观察植物是否发芽,并记录下它们的高度。
艾玛:接下来我们所要做的就是分析我们的数据,看看它们之间是否存在关系
杰克:没错。
所以……

题目

  SECTION 3 Questions 21-30

  Questions 21-25

  Choose the correct letter, A, B or C.

  21 Why is Jack interested in investigating seed germination?

  A He may do a module on a related topic later on.

  B He wants to have a career in plant science.

  C He is thinking of choosing this topic for his dissertation.

  22 Jack and Emma agree the main advantage of their present experiment is that it can be

  A described very easily.

  B carried out inside the laboratory.

  C completed in the time available.

  23 What do they decide to check with their tutor?

  A whether their aim is appropriate

  B whether anyone else has chosen this topic

  C whether the assignment contributes to their final grade

  24 They agree that Graves' book on seed germination is disappointing because

  A it fails to cover recent advances in seed science.

  B the content is irrelevant for them.

  C its focus is very theoretical.

  25 What does Jack say about the article on seed germination by Lee Hall?

  A The diagrams of plant development are useful.

  B The analysis of seed germination statistics is thorough.

  C The findings on seed germination after fires are surprising.

  Questions 26-30

  Complete the flow-chart below.

  Choose FIVE answers from the box and write the correct letter, A-H, next to Questions 26-30.


答案

  Section 3, Questions 21-30

  21 A

  22 C

  23 B

  24 C

  25 B

  26 G

  27 C

  28 H

  29 A

  30 E

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