响应号召，我也听了一段。感觉不错，听写和精听得感觉完全不一样。建议大家也试试。巧的是，这段里提到的学校恰好是我老公上的学校。看来osu和我缘分真的不浅。哈哈。
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3 f7 ~; \3 E6 z/ ~1 F3 I) fJanuary 29，2007 60-second science Tears are more than salt water
o) z/ {( M: I' R5 f% n文中有几个单词没听出来，还有可能听错的。请各位大虾指教。
6 i5 c$ v" l/ F- j, J8 _- ~* dif you have children or have ever had any contact to children,this is probably your familiar sound.(the sound of baby crying). when baby turned out water works , you may wonder why they cry. but the scientsits in ohio state university wonder, what is tear made of. the answer is surprising. it turns out that tear drop has three distinct layers . the salty usually associated with cry from the bolk of tears. but this layer sort of accurately like a sandwich between an inner layer of mucous and a outer layer of fat. every time you blink,the fat layer spread cross this arguelyoil slip protect people by ceiling water against the surface of your eyes. keeping them nice and moist. the oil layer also contain type of fat, called that was first identified to bring will help into sleep.
) i( T% a N8 D+ U) i2 a$ Ealthough o layer in teare bring on disease,the research don't yet know what it's doing. but they are in to find out. so you know what tear made of, if you only figure out how to get them stop, before they make enjoy it.
