今日听写
感觉内存状态比昨天好些。听写了五篇，不过都比较短，有的听写得很快。因为我是学地质学的，所以地球科学里的障碍不是很多，进度也稍快些。: w1 h& r. a1 m
加粗的是我没理解意思听出来的，听出来后才理解意思。似乎这样在考试中会造成障碍，虽然听出来了，但不知道意思跟没听出来一样。
0 O5 d( T$ ?- U人体生理第一篇' r$ _7 P6 b2 g6 w/ ^. E" A) ]
Listen to a professor talk to new students about the experiment in child development.
! V+ q9 \6 ^3 {6 n: n+ ]" \) xIn our lab today, we’ll be testing the Hypothesis that babies can count as early as five months of age. The six babies here are all less than six months old. You will be watching them on close circuit TV in measuring their (men) responses. Experiment is base on a well-established observation that babies stare longer if they don’t see that they expect to see. First, we are going to let’s two dolls move slowly in front of the babies. The babies will see the two dolls disappear behind the screen. Your job is to record in seconds how long the babies stare at the dolls when the screen is removed. In the next stage（stage不小心看到了答案，按错处理）, two dolls will again move in front of the babies and disappear, but then a third doll will follow. When the screen is removed, the babies will only see two dolls. If we are right, the babies will now stare longer because they expect three dolls, but only see two. It seems remarkable to think that such young children can count. My own research has convinced me that they have this ability from birth. But whether they do or not, perhaps we should raise another question. Should we take advantages of this ability by teaching children mathematics at such a young age? They have great untapped potential, but is it good for parents to pressure young children?8 o7 z$ u- l. G, i, F- t
' ?( o5 H1 o- [. v! h: F6 yBusiness第二篇
, m; ` g1 P \0 u6 a6 WListen to a talk about food labels.
7 x4 E' X3 m( _+ ]9 A9 yCurrent study showed that what goes on labels is an important consideration for manufactures. Since more than 70% of shoppers read food labels when considering whether to buy a product, a recent controversy as to whether labels on prepared food should educate, or merely inform the consumer is over, and the consumer group got its way. The group had maintained that product labels should do more than simply list how many grams of nutrients food contains. Their contention was that the labels should also list the percentage of the day’s total nutrients that the product will supply to the consumer because this information is essential planning a healthy diet. A government agency disagreed strongly, favoring a label that merely informs the consumer, in other words, a label that only list the contents of the product. The agency maintained that consumers could decide for themselves if the food is nutritious and meet their daily needs. The consumer group in support its case had decided to survey in which shoppers will show the food label, and will then ask if they will need more or less of certain nutrient after eating a serving of the product. The shoppers won’t able to answer the questions easily when they were not given a specific percentage. This study and others helped to get the regulation past. And now food products must have detailed labels. ! j5 C% W+ R4 ?
历史音频第十一篇
4 @; B/ Z9 W, M% ~: D; _Listen to a talk given in a university class.
" y! Q. ?! e- Y& a( x, g J' y/ G, aIn today’s class, we will be examining some 19th century pattern books that were used for building houses. I think it’s fair to say that these pattern books were the most important influence on the design of Northern American houses during the 19th century. This was because most people who wanted to build a house couldn’t afford to hire an architect. Instead, they bought a pattern book, picked out the plan, and took it to the builder. The difference in cost was substantial, in 1970, for example, hiring an architect would have cost about 100 dollars. At the same time, a pattern book written by an architect cost only 5 dollars. At that price, it’s easy to see why pattern book were so popular. Some are back in printed again today, and of course they cost a lot more than they did 100 years ago. But they are an invaluable resource for historians, and also, for people who restore houses. I have a modern reprint here and I’ll be passing around the room at the moment so that every can have a look. 5 ]: j x: g* _
生物音频第四篇
, X% O6 `. E4 c3 Y+ S& J% uWe’ve just seen two contemporary large birds that can not fly: the emu (E), and ostrich (O). Over here is an interesting specimen from the past, this stuffed animal is not the giant penguin it appears to be, but an auk (A). This particular kind of auk is very rare, and only 78 skins are known to exist, and most are now preserved as well as this one. The great auk, as you can see, was a rather large bird, and it couldn’t fly either. However, evidence suggests that the auk was an excellent simmer and diver. Unfortunately, those abilities did not protect it from the easy prey for hungry sailors who year ago sailed the very cold and often icy waters in Greenland, Iceland and Scotland. In fact, records indicated that the auk was rather tasty and its eggs, excuse me, that its eggs and feathers were useful as well. Still it isn’t clear what other factors lead to the big bird demise around 1844, the last time any one reported seeing one. Of course we believe it’s important to take extra precautions to preserve the remaining great auk skins. After all, these specimens should prove invaluable to future scientific research. Does any one have any questions before we move on to our next bird exhibit?
6 H, H; G% S. r8 |4 c地球科学第四篇' J+ |5 \6 r; l' G! K
Listen to a radio talk about fossil fuels.
/ H. L9 j( ] W0 m9 Y' H2 j' H: r- cToday, I want to discuss fossil fuels, such as coals, oils, and natural gas. The term fossil fuel refers to trapped remains plants, animals in the sedimentary rock. You see, living plants trap energy from the sun, by the process of photosynthesis, and they store their energy in their chemical compounds. Most of that energy is released when the plant is die and decays. However, sometimes organic matter is buried before it decays completely. In this way, some of the solar energy becomes trapped in the rocks, hence the name, fossil fuel. Although the amount of organic matter trapped in any one growing season is small, the accumulated remains for millions of years are considerable. Because the accumulation rate is so slow, millions of times slower than the rate at which we now dig up this organic matter and burn it for energy. We must consider fossil fuels as non-renewable resources. Tomorrow we will be discussing the alternatives of fossil fuels that can be renewed.
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