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[科学美国人60秒] 【整理】SSS 2009-01-09

提高英语听力能力 找对方法很重要!

HOMEWORK

This podcast is brought to you by scientific american’s,instant egghead guide to the mind,for more infomation,go to instant egghead.com

 

this is scientific american’s ,60s science,i'm karen hopkin,this'll just take a minute.have you ever turned off your lights and heard ~~~~~~~ to you it’s a sound that signals bites in the night,but to male mosquito ,it's a love song produced by a female seeking a mate. now scientist from cornell university find that males who answer that call join in the serenade,and the two sing in harmony as they check each other out.working with aedes aegypti mosquitoes,the pests that carry dengue fever,the scientists tethered individuals to special insect pin,and allow they to fly past a potential mate.they found a female on their own whine at a frequency of 400 hertz whereas a single buzz at about 600 .but when the two come together ,they perform duet in which the beat of their wings reaches a frantic 1200 hetz.isn't it beautiful?mosquitos seem to think so,which is a surprise because researchers had previously thought that female mosquitos were deaf ,but the cornell scientists found that the mosquito ears are good upto 2000 hertz,results published in the january 9th issue of science. maybe that harmonizing could be to exploited for controlling mosquito populations.releasing into the wild males can't sing could be a real buzz kill.

 

thanks for the minute for scientific american’s 60s science.I'm Karen Hopkin.

 

vocabulary:

egghead n. 有知识的人,受过高等教育的人,理论家

aedes n. 豹脚蚊[ei'i:di:z]

dengue n. 登革热['deŋgi]

whine n. 抱怨,牢骚,哀鸣vi. 哭诉,发牢骚,发呜呜声vt. 哀诉

duet n. 二重奏[dju:'et]

frantic a. 狂乱的,疯狂的['fræntik]

exploit vt. 剥削,开发,利用n. 功劳,功绩,功勋

 

PS:头一次来PUT听写,看到大家都好强喔~希望同学们多多指点~~

 

我在WORD上用红色标住了,可是粘过来就没了,下次好了~一起加油~

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