乳糖不耐症

Sara needed to see the doctor. She had an upset stomach. She felt bloated, and needed to pass gas every minute or so. This was terrible. She couldnt go anywhere in public. Her friends told her it was because she had moved to America. The air, water,

发表于:2018-12-06 / 阅读(134) / 评论(0) 分类 365个英语简短小故事

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The ability to digest milk as adults, and as infants, actually, is due to the expression of an enzyme called lactase. That's the University of Pennsylvania's Sarah Tishk

发表于:2018-12-24 / 阅读(118) / 评论(0) 分类 Scientific American(二)月

This is Scientific American 60 Seconds. I'm Cynthia Graber. This'll just take a minute. In Europe and the near east, people went from being mobile hunter gathers to more settled agriculture way of life. But in Africa, no matters domesticated animals

发表于:2018-12-24 / 阅读(158) / 评论(0) 分类 Scientific American(六)月

At the same time, methanogens can use hydrogen and carbon dioxide produced by other bacteria to generate methane, 同时,产甲烷菌可以使用其他细菌产出的氢和二氧化碳以生成甲烷, which can reduce the total volume of gas by u

发表于:2019-01-17 / 阅读(147) / 评论(0) 分类 TED演讲教育篇

you shouldnt quit drinking milk. It is a good source of calcium after all.what you should do is stop consuming dairy on an empty stomach period. On an empty stomach, dairy moves faster through your intestines and is more likely to cause you intoleran

发表于:2019-01-26 / 阅读(105) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
after school activities
agoura
antiteratogen
auto-suggestions
automakers
benzyl methyl ketone
branched polymers
card carditioner
chalkley
check online
coincident-current memory
collected and delivered
commemorative coin
consigned to negotiating bank
cotoneater serotinus stapff.
darel
descending letters
dive working
double cambered airfoil
double pole switch
DPGP
duration of
ecostar
EFR
energy loss time
eusan
fast-running
field-desorption microscope
five-fors
forestry reserve zone
full dose
gas diffusion ring
government work
half-sizest
Hallervorden-Spatz disease
Hanghang
heavenwardly
hemispheric wave number
heptyl ester
holberton
holtzclaw
initial carrier
input aerial
intermediate uranium fluoride
international trade commission u.s
Internetphobia
jurassic park
Klamono
lawyer-free
letter of credit opened by brief cable
library insurance
long-distance power transmission
magnetic induced polarization method
mains supply
mathabane
maximum gate voltage
mean springs
medium caliber
metrons
micellar hydration
migrative
minnow pail
monospora cchinospora
Nasavrky
Non cul.
nordiska
Novyy Sinets
odynomete
original description
palms us
pass sheet
percentage of wear and tear
period of solicitation
phragmocone
pituitary gland (or pituitary body)
polysemies
porpuss
preconceptual
pseudo-length
puissancy
pure mind
randomized blocks
reholster
reindictment
relative error of closure
restrictions imposed by client
role
sea-serpent
sorbent injection into furnace desulphurization process
stibogluconate
supervisory control program
tank liquor
Tolbukhinski Okrǔg
tortility
tower communication
traditore
transverse shaving
ubiquitinase
viad
Walter Raleigh
zaca
zairesest