时间:2018-12-24 作者:英语课 分类:Scientific American(三)月


英语课

   Teachers might want to think twice about posting 'no gum chewing' signs in the classroom. It turns out that the sticky substance might help students concentrate. Researchers had two groups of 20 people each listen to a 30-minute recording 1 that included a sequence of numbers. After listening, the participants were asked to remember the sequence. But only one group chewed gum, and they had higher accuracy rates and faster reaction times than the non-gum chewers. Those chewing gum also maintained focus longer during the exercise. The study is in the British Journal of Psycology and contradicts a 2012 study that found gum-chewing decreased shot-term memory performance. The researchers say that gum increases the flow of oxygen to regions of the brain responsible for attention. More oxygen can keep people alert and improve their reflexes. Research also shows that you won't get the same effect by just pretending to chew gum. So the next time you mind is wondering in class, maybe try some gum. If it doesn't help you concentrate, you'll at least be asked to leave.



1 recording
n.录音,记录
  • How long will the recording of the song take?录下这首歌得花多少时间?
  • I want to play you a recording of the rehearsal.我想给你放一下彩排的录像。
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actinic focus
albano
antifactory
arborescent branchia
as-yet-unknown
assembly system for peripheral processor (asper)
back-pressure operation
bast rsys
Baumann blade
better known as
black finish
chelping
chemical cement
chevalglass
chuffiness
ciculating
coating screen by spinning
collection of tax
college try
commonsense
consumable thing and non-consumable thing
cooling device of machining
copracrasia
cordyline fruticosa maroon
cream pipeline
current cursor position
cyanimide
cyanoethylates
david garricks
dental arthritis
dentate
discharge of cleaning water
dispersed adhesive
efficient processing
enforce payment
EOKA, Eoka
export credit guarantee system
featherfeet
felting quality
film crystal
freezing nuclei spectra
Gaton
glassings
Gordon's test
Growth opportunity
guide fork
hair-cutting
healthy energy-evil struggle
heat pipe preheater
high-density multi-track recording (hdmr)
HRNA
immediate staff
import export industry
increment felling
initial cause of labor
irrepresentability
isobutylcaine
jacket head
joint raising
Kent-His bundle
lady's cloth
laminar skin friction
lemon meringue
lorita
luther
lymphaemia
macro-levels
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middleness
mortgage swap
multirooted equation
neti
nodi lymphatici retrocaecales
nonbarcoded
nourishing blood for tranquillization
novinies
oil-reservoir water
Onychoplasty
order stereospondylis
ornithyl-
output data strobe
penjing garden
perking switch
phycohematin
rack space
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Rubik's cubists
schizophrenias
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tapered bit
the classifieds
thickety
tickled pink
transuding
Tropidia angustifolia
uncompletable
vitell
water puslen
why the hell
wolfeite
worrals