【Dictation】SSS 20120524

这是最近我和一位扇贝同桌每天在练习听写，都是听DDD科学六十秒，我觉得有必要把知识点整理一下，包括容易听漏、听错、听不出来的单词，当做巩固，也算是一份记录和督促。

搜了下网上流传的所谓正确听写方法：

　　1.第一遍盲听。大概了解什么意思。

　　2.第二遍再听。尽量做到能复述出大致内容。

　　3.第三遍精听。对照原文来听。

　　4.第四遍看答案，看解释，查字典，弄懂意思。

　　5.第五遍跟读。开始是跟读，最好练到能脱稿跟着说。

我觉得水平不够的照着做就成了。至于我这种程度的，就直接听写了，跟读除了时间一长气喘不过来，个别词跟不上，其他都成。

我所用的音频比较老，应该是去年师姐给我的资料，还得感谢这个扇贝同桌的提议，我这才开始进行这项任务(*/ω＼*)。

知识点：

一个重点词汇

elim·i·nate
 /ıˈlıməˌneıt/  verb  , -nates, -nat·ed, -nat·ing [  + obj  ]
  1 : to remove (something that is not wanted or needed) : to get rid of (something)
   Doctors seek to eliminate the causes of the epidemic.
   The body naturally eliminates waste products.
   The company plans to eliminate more than 2,000 jobs in the coming year.
   The regime has ruthlessly eliminated [=killed] the leaders of the opposition.
   She's trying to eliminate fatty foods from her diet.

  2 : to defeat and remove (a team, player, etc.) from a competition
  — often used as (be/get) eliminated
   The team was eliminated in the first round of the play-offs.

五个易听错

 source
chubby mice gained
have evolved
to alternate with lean 
waist enemy

原文：

Eating Fat MakesMouse Brain Want More

Mice fed a high-fat diet make new cells in the hypothalamus, which mayincrease the desire to eat more. Karen Hopkin reports

May24, 2012

If you could add cellsanywhere in your body, you might pick your brain. More brain cells should makeyou smarter, right? Well, a new study shows that they might just make youfatter. Becauseanimals that make new nervecells in a brain region that controls hunger tend to pack on the pounds. Theresults appear in the journal NatureNeuroscience. [Daniel A. Lee et al., "Tanycytes of the hypothalamicmedian eminence form a diet-responsive neurogenic niche"]

In the late 1990sscientists found that adult mammals can make new brain cells in an areaassociated with learning and memory. Since then, studies have shown that newneurons also arise in the hypothalamus, a structure associated with regulatingbody temperature, sleep and appetite. So, whatare those cells up to?

Usingtechniques to track the birth of new neurons, researchers found that mice fed ahigh-fat diet make four times as many new cells in the hypothalamus than doanimals raised on standard chow. When the scientists eliminated the source ofthese new cells, the chubby mice gained less weight. 

Thismechanism might have evolved to encourage animals to store up body fat whenfood is plentiful. Which used to alternate with lean times. But in these boontimes, your brain may be your waist enemy.

—KarenHopkin

[The above text is an exact transcript ofthis podcast.]