【天天来听写】TOEFL 集结号 暑期集中突破小组 天天来听写

小籁UID: 2392665

up~~

小籁UID: 2392665

10月18日

听力音频：
Beating Heart Tissue from Stem Cells.mp3 (1.25 MB, 下载次数: 21)

2009-10-17 00:37:33 上传

下载次数: 21

听力文本：

Beating Heart Tissue from Stem Cells.txt (1.18 KB, 下载次数: 10)

2009-10-17 00:37:33 上传

下载次数: 10

lmsleeperUID: 2559158

One of the problems with large scale solar power plans(plants工厂) is that they all require a huge amount of space. To rise above 克服their problem, (Israeli) researchers recently (patented'pætənt]专利) a system of solar collecting balloon. The (helium 'hi:ljəm氦filled) globes would be covered with thin (film), flexible (photovoltaic [ˌfəutəuvɔl'teiik]光电的photo+volt伏特+aic panels) to capture sun’s rays. Designs have been proposed before that including floating or flying solar (连读arrays[ə'rei]排列). But this is （modular ['mɔdjulə]模块化）system, (tethered['teðə]系绳，束缚 ) to the ground through the system of cables电缆. Some cables delivery helium to balloons, others will carry solar energy back to earth. The researchers are testing array on a few sites in Israel. A benefit of the system is that the arrays would cover a huge (parcel ['pɑ:sl]一块地，打包) of land. And the system can be easily expanded. Need more power, (hook钩) up another balloon. Of course there are still challenges, such as reducing the weight of balloons during (with) wind, and designing the (optimum ['ɔptiməm]) system for transporting the energy down to the surface. But developers say that thin film solar technology (advances) every month. And they hope their breakthroughs will make solar balloons realistic and economically viable in the not-too-distant future.

小籁UID: 2392665

10月19日

听力音频：
Carbonation Has a Taste.mp3 (1.25 MB, 下载次数: 18)

2009-10-18 10:49:05 上传

下载次数: 18

听力文本：

Carbonation Has a Taste.txt (1.26 KB, 下载次数: 8)

2009-10-18 10:49:05 上传

下载次数: 8

lmsleeperUID: 2559158

One of the goals of regenerative medicine is to make tissue to replace our own damaged parts. That’s still a ways off很大距离. But starting with mouse (embryonic [‚embrɪ'ɒnɪk]胚胎的) stem cells, researchers have succeeded in creating heart muscle that actually beats. The study appears in Oct. 16th issue of the journal of Science. Different sets组合 of (progenitor [prə'dʒenitə]祖先) cells in the heart give rights（rise） to two different types of heart cells—muscle and non-muscle. To make beating heart muscle, researchers need to figure out just which cells were the ones they needed. They used colored (fluorescent [fluə'resənt]荧光的 tags) to identify the group in question in (embryo ['embriəu]胚胎), allowing the correct cells to be harvested. But that’s just step one. The cells need to link up in a form that will allow them to be together. So the researchers borrowed from microchip technology. They created （patterns['pætən]图案花式） in the film much like the design from computer chip. Laying down the cells with(in连读 these) pattern forces them to take this distinguished shape of cardiac ['kɑ:diæk] muscle cell, which lets the cells link and beat in (sync [siŋk]同步). The ultimate goal is to grow beating heart muscle from patients’ own cells, and thereby (literally ['litərəli]逐字逐句的，不夸张的) mend a broken heart.

lmsleeperUID: 2559158

If you ever (craved) a ice-cold soda, you know that sometimes you just look for something in the tastes—(fizzy['fizi]嘶嘶声的，气泡的). If that sounds odd ɔd;, scientists discovered that （carbonation [kɑ:bə'neiʃən]碳酸化作用） actually has a flavor. And our taste (bud味蕾 can sense) CO2. bubbly (soft drinks tickle轻触，哈痒) our tongues with their (effervescence冒泡). But researchers got to wondering whether we can taste the carbonation. To find out, they studied (mice) whose taste cells had been turned off, one flavor at a time. So one mice couldn’t taste sweet things, another couldn’t taste (bitter ['bitə]苦), a third couldn’t taste salt, and so on. They found that mice lacking the cells that sense the taste （sour ˈsauə酸腐）no longer respond to CO2. (probing) further, they discovered that （eliminating [i'limineit]除去）a single gene renders使得 these mice blind, if you will, to the taste of carbonation. That gene (encodes ɪnˈkəud编码) enzyme that breaks down CO2 and water into (bicarbonate
[bai'kɑ:bənit] n. 重碳酸盐 and protons/ ˈprəutɔn;质子)
And it’s the protons, which are (essentially) acid, that the sour sensitive cell seems to sense. The work appeared in the journal science. The scientists speculate that our CO2 sense evolved to help us avoid food that spoiled腐坏的. Yet, we still like some (of 连读our) drink to include that（delightfully使人高兴地 acidic [ə'sidik]酸的）tingle刺痛、激动of a touch of CO2.

小籁UID: 2392665

10月20日


听力音频：

Life Origin Experiment Gets Better with Age.mp3 (1.16 MB, 下载次数: 24)

2009-10-18 23:42:28 上传

下载次数: 24

听力文本：

Life Origin Experiment Gets Better with Age.txt (1.26 KB, 下载次数: 8)

2009-10-18 23:42:28 上传

下载次数: 8

小籁UID: 2392665

10月21日


听力音频：
Brain's Speech Center Finally Talks.mp3 (1.13 MB, 下载次数: 18)

2009-10-20 01:47:03 上传

下载次数: 18

听力文本：

Brain's Speech Center Finally Talks.txt (1.24 KB, 下载次数: 8)

2009-10-20 01:47:03 上传

下载次数: 8

DriftKingUID: 2664045

In 1865 PB pinpointed the part of the brain responsible for language by thin brains of the language inpiared (impaired) the region is now called broke's(Broca) area. But more info has been hard to get because most brain research is done on animals and they are not talking.  

The types of human research that we can do such as brain skins are not detailed enough for identifying words using grammar and the act of speech. But in a study pulished October 16 in the journal of science researchers found the way around its bare(this barrier),

some ...(epileptics 癫痫症患者) who do not respond to drugs and go brain surgery. The four cutting sergents(surgeons)  implans electrodes to determine the exact side of the problem and to test healthy regions, So the researchers pick it back on the persigur(procedure) by giving 3 patients language tests.

patients thought of a word changed its tense or number and suddenly(silently) articulated on it. The scientists were able to pinpoint these activities all in them broke's areas, and the whole process took place within the 6 milliseconds that previous studies found was the time takes for a person to go from zero to speaking. researchers of that in the inner workings of broke's area and communicated their findings.

检验下成果，幻觉！！

小籁UID: 2392665

10月22日

听力音频：
Web Boosts Grandpa's Brain.mp3 (1.16 MB, 下载次数: 30)

2009-10-21 01:22:41 上传

下载次数: 30

听力文本：

Web Boosts Grandpa's Brain .txt (1.22 KB, 下载次数: 10)

2009-10-21 01:22:41 上传

下载次数: 10

lmsleeperUID: 2559158

In 1953, a student named Stanley Miller did an experiment showing that the simple chemicals present on the early earth could give rise to the basic building blocks of life. Miller filled the flask flæsk/烧瓶with water mess in(methane ['meθein] 甲烷) (hydrogen ˋhaɪdrədʒən/ hydr＝water
gener＝to produce) and (ammonia  [ə'məunjə]氨水), the main ingredients成分 of (primordial [prai'mɔ:djəl]原始的prim,prin,prem＝first; order,ordin＝order) soup. Then he (zapped 杀死，突然移动，遥控器迅速调台 the brew / bruː 酝酿) with electricity to simulate lighting, and, (viola=see there), he created amino acids, crucial for life. Now scientist reanalyzed this classic experiment, and found results were even more remarkable than Miller had realized. G B, former student of Miller, preserved the chemicals that were produced by those original sparks. And he analyzed the sample using equipment that wasn’t available in 50’s. He discovered an even greater (variety [və'raiəti])of organic materials than Miller originally reported. For example, (Bada’s team) identified 22 amino acids when Miller only saw 11. The results appeared in Oct. 17th issue of journal science. They also found that Miller didn’t report (his best results), which came from a flask that was (bathed) in some (steamy) volcano like (vapors).
That setup装备 produced an even (richer mix) of amino acids. I guess that Miller felt (that he’d) proved his point without needing any data that were primordially souped up加大马力的.

lmsleeperUID: 2559158

In 1865, Pierre Paul B pinpointed the part of brain responsible for language by (autopsying['ɔ:təpsi]验尸) brain of the language impaired, the region that now was called (Broca’s) area. But more info has been hard to get, because most brain research was done on animal and they are not talking. That type of human research that we can do, such as brain scans, are(n’t) detailed (enough for连读) identifying words, using grammar, and the act of speech. But in the study published Oct. 16th in the journal of science, researchers found a way around the (barrier). Some (epileptics[ˌepi'leptik] 癫痫患者) who don’t response to drugs undergo brain surgery. Before cutting, surgeons implant an electrode电极 to determine exact site of the problem and to test healthy regions. So the researchers (piggy-backed: The gaining of unauthorized access to a system via another user's legitimate connection) on the procedure by giving the three patients language tests. Patients thought of a word, changing (its tense时态 or) number, and silently (articulated[ɑ:'tikjuleit]有关节的, 发音清晰的) it. The scientists were able to pinpoint these activities, all within the Broca’s area. And the whole process took place within the 600 milliseconds['miliˌsekənd] that previous 以前的study found was the time it takes for a person go from zero to speaking. Researchers have thus now looked at the inner working of Broca’s area and communicated their findings.

小籁UID: 2392665

10月23日

听力音频：
Light All Night Not Alright.mp3 (1.16 MB, 下载次数: 23)

2009-10-22 01:25:03 上传

下载次数: 23

听力文本：

Light All Night Not Alright .txt (1.15 KB, 下载次数: 11)

2009-10-22 01:25:03 上传

下载次数: 11

DriftKingUID: 2664045

a night light may keep those must on the bed, but it may also open the door to the blues, because a new study reviews[reveals] that animals exposed to light all night long, show science[signs] of clinical depression,

if you have access to electricity, you know how[no doubt] switch on a lamp, may be you[/] even watch a little tv after the sun goes down. but our bodies use cures[cues] about light[ness] and dark to regulate our  hormones and of course our sleep cycles, so what might dix[these extra photons] be doing to our health.

To find out scientists housed mice in a room where the lights were always on. After three weeks, they found that mice who lived in the  spot lights showed simtense[symptoms] of depression, more show that[so than] mice who enjoyed 8 hours of darkness at night, interestingly, mice who could escape the light by darking[ducking] into a dark too[tube], also escaped the worst of the depression, the findings were presented on October 21st at the sociaty for neuroscience meeting in Ch, and they will be published in the journal behavior brain research in December,

so flicking their[flip that] light switch at your own rests[risk], because the artificial brightness that helps keep us up, could also keep us down.

我知道小籁要奖励我了，不过多给点声望吧，嘿嘿，我在攒人品

DriftKingUID: 2664045

searching the Internet can be a totally exausting(exhausting)  experience as you band[bounce] from one side[site] to another to another, sometimes [until] you can not remember what you [were] looking for in the first place, but according to scientists you see at late[at UCLA], all that virtruall[virtual] running around is actually good exercise, for your brain. perticularly if you are older, because Internet training can enhance neural function.

The scientists work[ed] with people between the age of 55 and 78, at the start of the study, all the participents did some websearching while the scientists moniter their brain activity by functional magmatic [resonance n.  共鸣, 反响, 回声 ]  imaging, the subjects who had little exposer to the Internet before the study, showed acitivity in brain regions involved in vision, language and reading,  

then everyone went home to do some surfing on their own, an hour a day for a totally[ of a ] week. When the no longer naive subjects returned to the lab, their brain scans showed additional activity in regions associated with working memory and desision making, the results were presented on October 19th at the 2009 meeting of the sociaty for neuroscience in Ch[Chicago]. so for older adults a little web surfing  could keep your brain on its tose

小籁看我有进步没？