查看完整版本: 旧托福听力mp3及脚本——《第三十九天》（2003年10月）

旧托福听力mp3及脚本——《第三十九天》（2003年10月）

对话听写训练1：[attach]4413[/attach] } Qe)b&E(eS.}!y!p
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W: Dr Manning, do you have a few minuets? I’d like to ask you about this fossil I found. ~L[a4R%b"x-y
M: Sure Joan. What have you got there?vFa7U l @*z4Z+lUM
W: Well, it’s some kind of shellfish. I thought is might be a brachiopod, but I am not sure. I found it
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JZY R when I went out hiking last weekend.
`.UZPm+X.d M: I think you might be right. It certainly appears to be a brachiopod. But it’s easy to confuse them Z7QV k&q,Xu6T^#]
with the bivalve mollusks. Superficially they resemble one another. Both have two shells for example.7cjm G%^3ti(fC
W: How can you tell them apart then?/\x9N t#U
M: Well, there are some minor differences in the shell. A lot of brachiopods have ridge shells like
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?5Q~2] this one. There are other distinctions of course. Internally they are quite different. Mollusks and brachiopods belong to different animal groups, and they have been in competition with one another millions of years ago. %N]v&q'V b
W: How old do you think this one is?K~Ua{oCX!H9W \mJ
M: It’s hard to tell. The earliest brachiopods were from the Paleozoic era, 300 to 500 million years
)V^4HdB1?fL2?;Y ago. They were quite successful then in terms of numbers of species. It’s not out of the question that your fossil could be that old. KJ&I:c1s;o
W: Wow, that’s amazing. Kind of makes paleontology seem more interesting when you can hold it in your hand.8Wid+vyfi@
M: You know that gives me an idea. Would you mind bringing this to our next class? The others might find it interesting too.e+t:\G.b
W: Well, I could. But if you don’t already have one in your collection, I thought you might as well keep it.WUpzP(EhU*B
M: That’s very kind of you.
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对话听写训练2：[attach]4414[/attach]
^}7Z0z6x}*gT Z1r.N M: I am so relieved I just finished the story I was working on for our creative writing course.7J%p1u_%U%V W
W: I haven’t quite finished mine yet. I had trouble getting past the beginning.0wY,Vo(\zj;y3kp(p
M: How come?B?cm9Jm
W: Well, I was really happy to be writing a detective story. But after the first few pages, I sort of froze r}t[ FR5c-z
up mentally. I just couldn’t write any more. r G6wDRf*k7A
M: The same thing happened to me. I thought it meant I lack imagination. I8qw!zg#s*T
W: Well, Prof Wilson said it’s pretty common for writers to get stuck like that.RpJ7O i(pQ
M: You went to talk to her about it?
1\Z9_:w.X | `1bJ W: Actually, I went to ask for more time to finish the assignment. But instead she gave me some *Is9BAL
advice about how to keep from getting stalled in my writing like that. She said that the first thing I should do is just write anything that come into my head even if it doesn’t make sense, sort of burble warm up exercise.5K\(u6y6C;T
M: That is interesting. When I got stuck, I shift to something else, you know, do some work for one of my other courses.+cZ-Fj6|(D
W: Well, her methods seem have worked for me. I’ve written most of the story, and I should be able to hand it in on time. But first I need go to the jewelry store.
c$u;D%mc*]A H.T M: You are going shopping? Can’t you wait until you finish your story?
r2O.TUU+Ke W: I am going there for my story. My detective solves a jewelry store robbery. So I want to take a look at how the jewelry cases are arranged, where the security cameras are located, that sort of thing.
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演讲听写训练1：[attach]4415[/attach]
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Today, we are going to talk about a special way some plants respond to being invaded by pests. These plants react by emitting a chemical signal, which acts like a call for help. Let’s take corn plants for example. Sometimes, caterpillars chew on the corn leaves. When the caterpillar saliva mixes with the chew portion of a leaf, the plant releases a chemical scream that attracts wasps. The wasps respond to the signal by flying to the chewed-on leaf, and laying their eggs in the caterpillars. The caterpillars die in the next few days as the wasp offspring nourish themselves by feeding off them. Thus the corn plant prevents all its leaves from being eaten by the caterpillars. This chemical scream is specific. It’s only released after the plant has detected the caterpillar saliva. A plant that is cut by any other means does not give off the same signal, nor doesn’t undamaged plant. This also explains how a wasp can find a caterpillar in a huge field of corn. Soybeans, cotton and probably many other plants use a similar type of defense against pests. By enhancing this natural response in plants, researchers might reduce, or some day even eliminate, the need for chemical pesticide, which can cause ecological damage. For example, scientists might breed plants for this screaming trait, or they might transplant specific genes to increase the release of chemical signals. .E~U2y0?5b4pp

-M2}GIIV,f%w"vT p 演讲听写训练2：[attach]4416[/attach]
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x/h(go8ZK5Z Today, we are going to continue our discussion of Buddhism. In our last class, we talked about how it’s practiced. Today, I’d like to talk a little about early Buddhism, which we really don’t know much about. Well, what is known is that the teachings of Buddhism were memorized, and passed on orally for centuries by its followers. Recently, there was an important discovery of Buddhist manuscripts that are believed to be the oldest ever found. They may be 2,100 years old. And there maybe as many as 20 of them. It’s expected that we will be able to learn from them about the spread of Buddhism from present day India into China, and throughout Asia. But the scrolls themselves have presented challenge too. They were very fragile, found rolled up in clay pots. Before they even could be looked at, they need to be dampened over night in fact, and then carefully flattened with tweezers. And it’s not that anybody could just sit down and read them. The scrolls were written in a language that is really rare today. Only a few people are proficient at it. Considering these challenges, it’s easy to understand why it’s taken scholars so long to examine the scrolls.*Eeo
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(Pv2TB/Bo.Q$n"vt'L 演讲听写训练3：[attach]4417[/attach]
kD"d)cfy?:c About 200 years ago, the United States economy was growing quickly, mainly because a booming trade in grain and cotton. This trade in grain and cotton went on near areas near or at the coast, or near navigable rivers. It took place there because it was so expensive to transport goods over the roads that existed. They were muddy, narrow, and hard to travel on. At that time, don’t forget there was only one continuous road that existed in the US, and it was made up of north to south local country roads, linked together to make one long road. Within a short time, the first east-to-west roads were built. They were called turnpikes. Private companies built these roads, and collected fees from all vehicles that traveled on them. Eventually, a network of dirt, gravel or plank roadways connected some major cities and towns. But even these turnpike roads were still very slow, and traveling on them was too costly for farmers. They would’ve spent more money to move their crops than they got by selling them. So, we see that even with some major improvement in roadways, farmers still had to rely on rivers to move their crops to market.