字神帝國英語天地

今天天氣好好，真是太適合……讀書了!! 素不素，快來練聽力哦。
今日主題：Blood Test Forecasts Concussion Severity
血液檢驗可以預測腦震盪的嚴重程度

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
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：喜歡的同學，幫忙推或按讚哦~~
http://online1.tingclass.net/voaspe/2014/20141228sa_mind.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：
Confusion is one symptom of a concussion. But confusion may also characterize decisions about how soon to let an athlete play after taking a hit to the head. Sizing up symptoms such as dizziness and nausea is subjective, after all. Now a study suggests that a blood test could objectively determine whether or not the damage is bad enough to put a player on the bench. The work is in the Journal of Neurotrauma.

困惑混亂是腦震盪的症狀之一。但這種困惑也有助於決定，當運動員頭部遭受撞擊後，多久可以回到賽場上。畢竟頭暈、噁心等症狀的輕重是主觀的。現在一項研究表明，血液測試可以客觀地確定受傷傷情是否嚴重到足以將一名運動員安排進替補席。該研究出自《神經外傷雜誌》。

\A strong blow to the head causes chemical changes within nerve cells that damage their structural proteins. Among the debris is a protein fragment called SNTF—which in more severe cases, spills into the bloodstream.
對頭部的強烈衝擊會引起神經細胞的化學變化，進而損傷其結構蛋白。碎片當中是一種被稱為「SNTF」的蛋白質片段，在較為嚴重的情況下它會洩漏進入血液中。

The new study followed 20 professional hockey players who got concussions with symptoms that lasted six days or more. And blood levels of SNTF were much higher one hour to six days later than were levels of the protein fragment in eight other athletes who had gotten concussions that cleared up within five days.Levels were also low in 45 non-concussed players tested during the preseason.
這項新研究跟蹤調查了20名職業曲棍球運動員，他們均遭遇過持續時間長達六天及以上的腦震盪症狀。症狀持續6天多的球員們血液中的SNTF水平與其他8位 遭遇腦震盪後5天內就清理了的運動員比，SNTF水平相對較高。賽季前測試的45名未遭受腦震盪的球員，他們的SNTF水平也比較低。

A blood test for SNTF might thus forecast recovery time from a head injury. Combined with other neurological tests, levels of this molecule could help doctors tell athletes when it's safe to suit up again.
因此進行SNTF血液測試，或可預測頭部受傷的恢復時間。結合其它神經系統測試，這種分子水平將有助於醫生判斷，運動員何時可以再次整裝出戰。