时间:2019-02-24 作者:英语课 分类:英语听力文摘 English Digest


英语课

  Nice Nest

雄孔雀开屏是为了向人类炫耀她无与伦比的美丽尾巴?呵呵,似乎我们有点自作多情了,雄孔雀可没有兴趣理睬人类,他不过是在向自己的“意中人”表达爱意。现在研究人员发现,雄性刺鱼在求偶时也会有类似的行为-这些可爱的小家伙会把自己的巢穴打扮得漂漂亮亮来吸引雌性刺鱼的注意。

Nice Nest on today's moment of science.

Researcher Sara Oslund-Nilsson, who works at the University of Oslo, in Norway, was studying three-spined stickleback fish. She was interested in a particular behavior that has long fascinated researchers: the tendency of sticklebacks to use colored bits of dead algae 1 in their nests.

Why is this interesting? Well, stickleback nests tend to be simple piles of greenish fuzz. Females come by, choose a nest, and lay eggs in it. Not much color is involved anywhere. Is it possible, Oslund-Nilsson thought, that the males were using the rare opportunity for color to get the attention of the females?


  To test this idea she and her co-wokers did something so simple it’s brilliant. They cut up tiny strips of colored foil from Christmas candy and dropped them in the tanks.

Sure enough, the males went bazoo when they saw these brightly colored pieces–”bazoo” is a technical term–and started stuffing them into their nests.

Now, there is debate over what the data show next–but by some measures, the strategy was a hit. That is, when the females came along, they seemed to prefer the flashy, foil-filled nests over your run of the mill brown-green shtick.

So why would a flashy nest mean a better mate? It may be that by having a snazzy nest you are advertising 2 your fitness–look at all the stuff I have! I can go out and gather things!

Oslund-Nilsson also notes that red strips seemed to be particularly popular and that male sticklebacks turn red when it’s time to breed. She suggests this may be a way of announcing breeding status:"Hey,look at all the red,one sexy fish is here!"



n.水藻,海藻
  • Most algae live in water.多数藻类生长在水中。
  • Algae grow and spread quickly in the lake.湖中水藻滋蔓。
n.广告业;广告活动 a.广告的;广告业务的
  • Can you give me any advice on getting into advertising? 你能指点我如何涉足广告业吗?
  • The advertising campaign is aimed primarily at young people. 这个广告宣传运动主要是针对年轻人的。
学英语单词
abustles
afibrinogenaemic
albomycetin
arranged marriage
BFUP
cappa
chain home beamed
chalutzim
chronicle of school
citrus leaf-miner
cowboy economy
data longevity
decentralized stochastic control
Dewi, Saint
differencing
directional radio
dominant tone
drafts
Duncan I.
earthed concentric wiring system
eusintomycin
externally heating
faciobrachialis
fancy oneself as
fifty-somethings
fore pressure
gamma-aminobutyric acid
gateway-to-gateway protocol
gelatin tube
get stuck in the mire
hay-seed
hoerr
holthe
hyperergic
import cargoes
inadequate diet
indirect initiation
knock someone's eyes out
knowledge-oriented
Kuibyshev
laugh sth to scorn
Laves' phases
lecointre
left inverse element
Leg-Over
length of boss
Lermontov, MikhailYurievich
Linda Vista
Linneryd
liquid nitrogen freezing system
liquor tyrothricini
load-deflection relation
looked after
magnifiable
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Mary Cassatt
medrysone
milltailings
mixed ores
monensin
negroponte
nongoal
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Panxworth
paramukta
Parkhurst
part-drawing
Periptychus
pestle mill
phenagle
pipeline inventories
point probe-dynamic characteristic method
police judge
potyvirus konjak mosaic virus
quarter-bell
quenching and high temperature tempering
ramus ilicus
real-time application
resection through cervical approach
right-to-left rule
rotto
safe in life and limb
sample frequency
scientise
see ... off
semiconductor particle detector
settlingss
Shubat Enlil
soapy water
soft HRM
sputum
supplementary appropriation
Telotremata
texting codes
the bitter truth
the dogs of war
trichosurus vulpeculas
tubb
unholding
view(in computer graphics)
walking orders
X-ray fluorescences