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
Achorion lebertii
alkaline reserve
allosyndisis
already-listed
angle of shear resistance
antenna inaequalis
Arbatax
atomic physicss
bar cutting machine
be one for the books
Bellegem
Bhagwan
biis
bilateral bearing
black mould of rice
Blyth Ra.
Bykovka
can feeder
chequer-work
clicketting
compound dl
configuration insteraction
consumer action group
COP (coefficient of performance)
crest-fall
Cross-measurement
cucumbertrees
cufflinks
dado capping
deaf-points
deferred check point restart
deglucohellebrin
dimanches
efficiency rotation
engarrisons
environmental cracking
exempt employee
froken
gas gauging
general once-over tillage
get away speed
get mine
guaranteed efficiency
guyette
ibm tivoli storage resource manager agent
iron stone
Kaura
krypton-85 source
large scale air separation plant
lead autunite
lexicalises
liquid bath furnace
lucernas
luteal regression stage
marginal net revenue curve
melasyenogabbro
mesnyi
mixus
Murzūq
musculus arrector ventr.
newly-appointeds
nonzero algebra
normalism
normative reference group
oil gage
oriental medicine
paint the town red
paraolfactory
parting shears
phosphoranyls
playgirl
plectranthias yamakawai
preheating evaporator
procedure execution stack
processor consistency model
professional workstation
prohibitory injunction
pseudocysticercosis
ran ragged
see something of the world
seepage deformation
separated-gang cultivator
settlement slope
sight deposit
silky pig iron
skreak
small-plate
Sooretama
soyt
standard preparation hours
stone net
tazmania
The ass waggeth his ears
tourist board
truxillic acid
unacknowledged connectionless-mode transmission
Vacutainer
ventricular escape
voluntary contribution
water extract
welding blower
woodsia alpina gray