每天上传5个旧托福的音频……2个长对话……3个长演讲……& X; e  C0 i3 k4 a
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大家听写完大概用时1小时
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请大家听写后总结关键词或专业词汇并牢记每篇段子的背景
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音频文件: ]; K7 |& _0 d' k% e+ W! u+ e
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长对话听写训练1$ l+ H0 o$ O9 C; `9 G% H+ {

! z) ~* b  H- a) w* s" d) N6 tDavid, can I give you a hand with one of those grocery bags? Sure, Nanny. Could you take this one please? I didn't realize how heavy these bags would be. Why did you buy so much stuff when you have to walk back home from the store? Well, I didn't intend to buy a lot. But I'm having some people over and I guess I needed more than I expected. What's the occasion? Now the people I live with, the Kremers, have been on vacation for a month and I thought I'd surprise them. I'm inviting some of their friends and families for a welcome home dinner. Oh, That's really thoughtful of you. I figure it's the least I can do for them. They've been letting me stay with them rent free while I'm in school. Really? That's pretty generous of them. Well. they understand how difficult it is to make ends meet when you're a student. They've been such a big help to me. I thought that this might be a small way to thank them for the generosity. 5 {8 F8 d" ^9 r) z$ F/ x! @

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长对话听写训练2% |- C( a0 E% l' c/ e% t

' e! ~) v4 e0 x; _- l; |' cHey! How was your trip? * W, x+ L' \  R4 g" w$ _
Wonderful! I spent most of my time at the art museum. I especially liked the new wing. I was amazed to hear the guide explain all the problems they had building it. Right. I just read an article that went on & on about the cost. 90 million total I think. Yeah. The guide mentioned that. you could see they spared no expense. Hm. It looked really unusual, at least from what I saw on the picture. It is. The basic design is two triangles. In fact there are triangles all over. he paving stones in the courtyard, the skylights and even a lot of the sculptures. One sculpture is a mobile. It's in the courtyard and It's made of pieces of aluminum that moves slowly in the air. It's really impressive. That was in the article too. It said that the original was steel and it weighed so much that it wasn't safe to hang. Right. They did it over  in aluminum so it wouldn't come crashing down on someone's head. You know the article went into that  in detail. There was even an interview with the sculptor. I'd like to read that . Would you mind if I borrow the magazine sometime ? No. I wouldn't mind if I haven't thrown it out yet.
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In the few minutes that remain of today's class, I'd like to discuss next week's schedule with you Because I'm presenting a paper at a conference in Detroit on Thursday, I won't be here for either Wednesday's or Friday's class. I will however be here for Monday's. Next Friday, a week from today, is the midterm exam, marking the half way point in the semester. Prof. Andrews has agreed to administer the exam. In place of the usual Wednesday class, I've arranged an optional review session. Since it is optional, attendance will not be taken. However attending the class would be a good idea for those worried about the midterm. So remember: Optional class next Wednesday; Midterm, Friday. ! Q' a) I; ~# Z
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长演讲听写训练2
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& y; K% s- H! f4 d; RToday's lecture we'll center on the prehistoric people of Nevada# r' Z! M- m/ Z7 x( V
Desert. Now most of the these prehistoric desert people moved across the countryside throughout the year. You might think that they're wandering aimlessly. Far from it, they actually followed the series of carefully planned moves. 2 ?4 [8 ^3 A+ U& u2 l
Where they moved depended on where food was available. Places where plants were ripening or fish were spawning. Now often when these people moved, they carried all their possessions on their backs. But if the journey was long, extra food and tools were sometimes stored in caves or beneath rocks .
2 o( K, I1 ?1 D9 ]3 uOne of these caves is now an exciting archaeological site. Beyond its small opening is a huge underground grotto. Even though the cave is very large, it was certainly too dark and dusty for the travelers to live in. But it was a great place to hide things. And tremendous amounts of food supplies and artifacts have been found there. The food includes dried fish, seeds and nuts. The artifacts include stone spear points and knives. The spear points are actually rather small. Here is a picture of some that were found. You can see their size in relation to the hands holding them. - w4 _( I$ f$ Z- U

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; o1 D2 l: J  H3 f( M$ D- ?# iTo us , the enviornment in which fish dwell often seems cold, dark and mysterious. But there are advantages to living in water. And they've played an important role in making fish what they are. One is that water isn't subject to sudden temperature changes. Therefore it makes an excellent habitat for a cold blooded animal. Another advantage is the water's ability to easily support body weight. Protoplasm has approximately the same density as water. So a fish in water is almost weightless. This weightlessness in turn means two things:
5 N1 v+ a0 c4 v& V2 g- m4 ~1) A fish can get along with a light weight and a simple bone structure. And
4 v! t/ D: t6 V2) Limitations to a fish's size are practically removed. Yet there is one basic difficulty to living in water---the fact that it is incompressible. For a fish to move through water, it must actually shove it aside. Most can do this by wiggling back and forth in snake-like motion. The fish pushes water aside by the forward motion of its head and with a curve of its body and its flexible tail. Next the water flows back along the fish's narrowing sides, closing in at the tail and helping the fish propel itself forward. The fact that water is incompressible has literally shaped the development of fish. A flat and angular shape can be moved through water only with difficulty. And for this reason, fish have a basic shape that is beautifully adapted to deal with this peculiarity.

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