字神帝國英語天地

今日主題：Kid Scientist Finds Sweet Pest Control
少年科學家發現一種甜味劑可以控制害蟲

洪欣老師推薦：托福聽力最好的課外教材：60-Second Science
康康精選托福會考的主題，堅持每天精聽一定會進步的哦!!

建議方法：
1. 先聽兩三遍 (不看文稿)
2. 再一句一句聽寫 (每句都要聽寫數遍，直到寫出85%以上的字)
3. 最後check文稿，看哪聽不出來，單字沒背過，還是發音不熟。
4. 堅持天天聽，就能每天進步哦。

MP3音檔 (按右鍵可下載聽)：喜歡的同學，幫忙推或按讚哦~~
http://online1.tingclass.net/voaspe/2014/20140610sa.mp3

只有音檔怎夠，聽不懂地方，不用怕，康康幫你準備好中英文稿了：

中英文稿：
Eleven-year-old Simon Kaschock-Marenda's science fair project led to a publication about the insecticidal effects of the sweetener Truvia. Karen Hopkin reports.
根據11歲的Simon Kaschock-Marenda科學展項目的研究，發表了一篇關於甜味劑Truvia 殺蟲作用的文章。凱倫•霍普金報導。

You can catch more flies with honey than with vinegar. But if you want to kill them, you might try Truvia.
用蜂蜜會比用醋抓到更多的蒼蠅。但是如果你想要殺死這些蒼蠅，你可以試試甜味劑Truvia。

Because a new study shows that the active ingredient in this popular sweetener can act as an insecticide.
因為一項新的研究表明，這種流行的甜味劑中的有效成分有殺蟲劑的作用。

The study began as a sixth-grade science-fair project. Eleven-year-old Simon Kaschock-Marenda noticed that his parents had stopped using sugar.
在一項最初是一個小學6年級科學展項目的研究中，11歲的Simon Kaschock-Marenda注意到他的父母已經停止用糖。

So he decided to see how different sweeteners affect the health of fruit flies.
所以他決定研究一下，看看到底什麼樣的甜味劑可以影響果蠅的健康。

He and his dad, a card-carrying biologist, offered the flies food spiked with a variety of no-cal sweeteners.
他和他的父親(一位元真正的生物學家)餵食果蠅各種無熱量的甜味劑。

Six days into the experiment all the Truvia-fed flies were dead, while those stuck with Sweet-n-low, Splenda or Equal lived five to seven weeks.
經過6天的實驗，吃了Truvia 甜味劑的果蠅都死了，而那些吃了Sweet-n-low, Splenda 和Equal這些牌子甜味劑的果蠅可以活5-7周。

Why Truvia makes flies drop like flies is still a mystery. Back in the lab, the researchers confirmed that the bugs weren’t starving: they all continued to eat.
為什麼Truvia 甜味劑能使果蠅大量死亡，這仍然是一個謎。回到實驗室，研究人員證實這些蟲子並不饑餓，卻一直在吃。

Most actually seemed to prefer Truvia to real sugar when offered a choice, findings published in the journal PLOS One. [Kaitlin M. Baudier et al, Erythritol, a Non-Nutritive Sugar Alcohol Sweetener and the Main Component of Truvia®, Is a Palatable Ingested Insecticide]
發表在《公共科學圖書館•綜合》雜誌的研究表明，比起真正的糖來說，果蠅實際上更喜歡Truvia 甜味劑。

Next, the researchers will see if the sweetener kills other bugs, like cockroaches or ants. Until then, try tossing a little Truvia in your coffee, and on the counter.
—Karen Hopkin
其次，研究人員將繼續研究，看這種甜味劑是否可以殺死像蟑螂，螞蟻等其他害蟲。如果可以的話，到時，你只要在你的咖啡裡或者你的櫃子上放點甜味劑就可以了。
由凱倫•霍普金報導。