[x] 听力 part1/4
Many people believe that social networking sites (like Facebook) have had a negative impact on individuals and society. To what extent do you agree or disagree with this statement?
The controversial issue of whether social networking sites had negative influence on individuals and society has launched a heated debate. Some people agree with this point of view。 Personally, I cannot absolutely agree with the assertion considering the benefits of social networking sites.
Advocates who believe that social networking sites have disadvantages on individuals and society may base their stance on the following facts. It is true that the information shared on social networking sites like Facebook may lead to passive emotions. For example, more and more children are taking advanced classes that will appear in their schedules much later, which may result in a lot of anxiety. Another point worth mentioning is that some images or videos posted on social networking sites are about violent crime, traffic accidents and many things like these. As a result, it may cause panic in society and lack of trust.
However, we should meanwhile acknowledge that there are some advantages to social networking sites as well as disadvantages. First of all, in regard to individuals, it is optimistic and active information that helps people who are distressed and sorrowful restore their confidence and make a fresh start. In addition, with the supervision of online-user, it is a fact that social life and government management become more and more just and fair, promoting social harmony and social development.
To put it in a nutshell, considering all the factors above, we may safely draw the conclusion that social networking sites had not only negative influence on individuals and society but also positive influence.
The graph shows the spending on research into renewable energy of four countries from 1975 to 2000.
The line graph depicts four countries spent on the research of renewable energy during the period between 1975 and 2000.
Overall, it can be seen that the spending on research into renewable energy in Switzerland had a rapidly increasing while the figure of Denmark had a relatively slow growth. What is more, the other two figures of Spain and the UK almost remained constant. They all started at the same point 0 dollars per person in 1975, with a rise of different extent in the following years. And the figure of Switzerland had the peak number(over 5 dollars per person) in 2000 while the figure of the UK had the lowest point(about 0.2 dollars per person) at the same time.
At the beginning, the figure of Switzerland stood at 0, then it had a swift rise reaching over 5 in 2000. While the figure of Denmark had the same rate of growth as Switzerland in the first 5 years, and then the figure began to remain unchanged for about 15 years, before coming up to 3 dollars per person in 2000.
In regard to the figures of Spain and the UK, they have similar experiences during that time. After they started, they had small fluctuations, finally ending up to less than 1 and about 0.2 respectively.
Emma: We've got to choose a topic for our experiment, haven't we, Jack? Were you thinking of something to do with seeds?
Jack: That's right. I thought we could look at seed germination - how a seed begins to grow.
Emma: OK. Any particular reason? A.I know you're hoping to work in plant science eventually...ß
Jack: Yeah, 否定A.but practically everything we do is going to feed into that. No, 21. A. 答案 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. 21.否定C If I choose that option, I don't have to do a dissertation module.
Emma: Good idea.
Jack: Well, I thought for this experiment we could look at the relationship between seed size and the way the seeds are planted. So, we could plant different sized seeds in different ways, and see which grow best.
Emma: OK. 22.CWe'd need to allow time for the seeds to come up.
Jack: 22.同意.CThat should be fine if we start now. A lot of the other possible experiments need quite a bit longer.
Emma: 22.C So that'd make it a good one to choose. And I don't suppose it'd need much equipment; we're not doing chemical analysis or anything. 22.B.Though that's not really an issue, we've got plenty of equipment in the laboratory.
Jack: Yeah. 进入23题,We need to have a word with the tutor if we're going to go ahead with it though. 23.否定.A选项I'm sure our aim's OK. It's not very ambitious but the assignment's only ten percent of our final mark, isn't it? 23.B选项.But we need to be sure we're the only ones doing it.
Emma: Yeah, it's only five percent actually, but it'd be a bit boring if everyone was doing it.
Jack: 引出24题 Did you read that book on seed germination on our reading list?
Emma: The one by Graves? I looked through it for my last experiment, 24否定B选项though it wasn't all that relevant there. It would be for this experiment, though. 24题C选项I found it quite hard to follow - lots about the theory, which I hadn't expected.
Jack: 同意C Yes, I'd been hoping for something more practical. 选项A.没说失望It does include references to the recent findings on genetically-modified seeds, though.
Emma: Yes, that was interesting.
Jack: 引出25I read an article about seed germination by Lee Hall.
Emma: About seeds that lie in the ground for ages and only germinate after a fire?
Jack: That's the one. I knew a bit about it already, but not about this research. 这个有点难 25B选项His 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.
Emma: Was that the article with the illustrations of early stages of plant development? They were very clear.
Jack: I think those diagrams were in another article.
Emma: Anyway, shall we have a look at the procedure for our experiment? We'll need to get going with it quite soon.
Jack: Right. So the first thing we have to do is find our seeds. I think vegetable seeds would be best. And obviously they mustn't all be the same size. So, how many sorts do we need? About four different ones?
Emma: I think that would be enough. There'll be quite a large number of seeds for each one.
Jack: 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.
Emma: That'll be quite time-consuming. And 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.
Jack: OK. So then we get planting. Do you think we can plant several seeds together in the same plant pot?
Emma: No. I think we need a different one for each seed.
Jack: Right. And we'll need to label them - we can use different coloured labels. Then we wait for the seeds to germinate - I reckon that'll be about three weeks, depending on what the weather's like. Then we see if our plants have come up, and write down how tall they've grown.
Emma: Then all we have to do is look at our numbers, and see if there's any relation between them.
Jack: That's right. So ...
1.They need to control the temperature_____ of their bodies.
\2. In land, the area for movement_____ is restricted.
\3. Some of them stay in the holes_ of trees to stay cool.
\4. Eat tree roots_
\5. They can’t fly because of their heavy weight of bones_.
\6. To edure the harsh weather, they loose their weight_ in winter.
\7. They have predators including seals and ___sharks.
\8. The penguins undergoes an annual molt, replacing all its feathers_ in a few weeks.
\9. Seagulls eat penguin eggs .
\10. To protect them, maintaining the diversity of gene is important.
[x] A. roots根
[x] B. feathers羽毛
[x] C. weight重量
[x] D. diversity多样性
[x] E. eggs蛋
[x] F. holes洞
[x] G. bones骨头
[x] H. movement行动
[x] I. sharks鲨鱼
[x] J. temperature温度