(单词翻译:单击)
听力文本
Scientists have come up with answers to the age-old question of why eyelashes are the length they are. Researchers at the Georgia Institute of Technology conducted a variety of tests on the lashes of 22 differentmammals. One was to create a special wind tunnel and an artificial eye to provide mathematical models of how the wind blew over lashes. The conclusion of head researcher David Hu is that the function of eyelashesis to help protect the eyes from drying out and that the optimal eyelash length for this to happen is one-third as long as the eye is wide. Professor Hu found that across a wide variety of mammals, the ratio of eyelash length and eye width was consistently one-third.
Dr Hu started his investigation after the birth of his newborn daughter. He wondered why his baby kept on batting her eyelids. He told the International Business Times that: "Eyelashes that rim the eyes in mammals have been a mystery for a long time as to what their function was. There were a lot of hypotheses, from dust catchers to triggering the blink reflex….What we did was the first aerodynamic study of eyelashes. We showed using three independent means that eyelashes reduce evaporation of the eye by 70 per cent, and they reduce [the deposits] of small airborne particles." A colleague said Hu had a talent for, "looking at what everybody has looked at, and seeing what nobody has seen."
中文翻译
为什么眼睫毛就是那么长,对这个老生常谈的问题,科学家想出了答案
。佐治亚理工学院的研究人员对22种哺乳动物的睫毛进行了多项研究 。人们的目标是制作出一个特殊的通风道,和人工眼球来测算出风是如何影响睫毛的 。研究主任大卫·胡的结论是眼睫毛的作用是用来保护眼睛干涩的,而理想的眼睫毛长度是眼宽的三分之一 。胡教授发现在众多哺乳动物中,眼睫毛和严宽的比例都是三分之一 。就在胡博士的女儿出生后,他开始了他的调查
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重点讲解
1.come up with 提出
But how do you come up with the architecture for this evolutionary prototype?
但是你将如何为这个进化的原型提出系统的架构呢?
2.a variety of 各种各样的
This can happen for a variety of reasons, and these reasons can be unintended as well as deliberate.
这一情况可能是由多种原因造成的,这些原因可能是无意的,也可能是故意的
。3.International Business Times 国际财经时报
Now, according to reports in the International Business Times, the handsets could be on sale early next year.
如今,根据《国际财经时报》的报道,这款手机将于明年年初开始销售
。4.blink reflex 瞬目反射
Objective To study the evaluation value of blink reflex(BR) in early peripheral facial palsy within 3 daysfrom onset.
目的研究眨眼反射(BR)对发病3日内早期周围性面神经麻痹的评估价值
听力题目
1.How old did the article say the question was about eyelashes?
a) 27,000 years old
b) four millennia
c) 27 years old
d) age-old
2.How many different mammals did the scientists look at?
a) 21
b) 22
c) 23
d) 24
3.What special machine was made to test eyelashes?
a) a mascara measurer
b) a laser
c) a wind tunnel
d) a 3D eyelash printer
4.What did David Hu conclude about the function of eyelashes?
a) it protects eyes from drying out
b) they are to attract partners
c) very little
d) they help us sleep
5.What was the ratio of eyelash length and eye width found in mammals?
a) a fifth
b) a quarter
c) a third
d) three-eighths
6.What triggered Dr Hu to start his investigation?
a) his own blinking
b) his baby daughter
c) a magazine article
d) an eye operation
7.What did Hu's baby keep doing to her eyelids to make him wonder?
a) closing them
b) rubbing them
c) keeping them open
d) batting them
8.What did one hypothesis say was triggered by eyelashes?
a) the blink reflex
b) the butterfly effect
c) colds
d) shortsightedness
9.By how much is evaporation in the eye reduced by eyelashes?
a) 50%
b) 60%
c) 70%
d) 80%
10.What did a colleague say Hu had a talent for seeing?
a) past the obvious
b) what others had not seen
c) eyelashes
d) the future
听力答案
1.d
2.b
3.c
4.a
5.c
6.b
7.d
8.a
9.c
10.b