时间:2019-01-08 作者:英语课 分类:Scientific American(八)月


英语课

This is Scientific American’s 60-Second Science, I’m Cynthia Graber. This’ll just take a minute.


 


Clues about modern-day tuberculosis 1 could be found in some 6,000 year old bones. Israeli, Palestinian and German scientists have teamed up to investigate the remnants of diseases in bones excavated 2 from the ancient city of Jericho. It’s an exercise in paleoepidemiology, the study of ancient diseases in mummified bodies and other human remains 3. The Jericho bones were unearthed 4 by Dr. Kathleen Kenyon half a century ago. The DNA 5 in the samples will be tested for tuberculosis, leprosy,leishmania and malaria 6. But the focus is on tuberculosis, which is the biggest killer 7 today. Scientists believe that tuberculosis originated in the Fertile Crescent 9-10,000 years ago. And Jericho is one of the earliest cities on earth, about 11,000 years old. So there’s a good chance TB could have gotten a start there. Researchers will be studying how early cities—the first time people lived in crowds—affected the DNA of microbes and their human hosts. They’ll also be looking at the remains of animals, which could have been disease vectors. Scientists on the team believe there’s sufficient DNA in the samples to provide new information about the origin and evolution of TB, which could help us combat it today.


 


Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber.

 



n.结核病,肺结核
  • People used to go to special health spring to recover from tuberculosis.人们常去温泉疗养胜地治疗肺结核。
  • Tuberculosis is a curable disease.肺结核是一种可治愈的病。
v.挖掘( excavate的过去式和过去分词 );开凿;挖出;发掘
  • The site has been excavated by archaeologists. 这个遗址已被考古学家发掘出来。
  • The archaeologists excavated an ancient fortress. 考古学家们发掘出一个古堡。 来自《简明英汉词典》
n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
出土的(考古)
  • Many unearthed cultural relics are set forth in the exhibition hall. 展览馆里陈列着许多出土文物。
  • Some utensils were in a state of decay when they were unearthed. 有些器皿在出土时已经残破。
(缩)deoxyribonucleic acid 脱氧核糖核酸
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
n.疟疾
  • He had frequent attacks of malaria.他常患疟疾。
  • Malaria is a kind of serious malady.疟疾是一种严重的疾病。
n.杀人者,杀人犯,杀手,屠杀者
  • Heart attacks have become Britain's No.1 killer disease.心脏病已成为英国的头号致命疾病。
  • The bulk of the evidence points to him as her killer.大量证据证明是他杀死她的。
标签: SSS remnant
学英语单词
a-strut
acephalocysts
achroia
adhesive treatment
aecidium elaeagni
all-parties
Allnortoxiferine
Amomum odontocarpum
Anostominae
approximate solution
asorbtive power
balanced lattice square
bodynets
Bounce-Up
butyl methyl sulfoxide
Calliopsis
capylus
carquest
circular-foil type
complete working cooperative society
couoxylon
coverage ratio
cresoform
dht (discrete hadanmard transform)
diammonium hydrogen phosphate
disharmonious habitat
draw-wind
dressing mirror
dual-effect mutant
Fiesole, Giovanni da
floozy, floozie
fluid culture
follow focus attachment
front fork
generalization of binomial theorem
getting to grips
glaze storm
gnomons
guanidiums
gyniatrics
Hersh
Hicks, Sir Joho Richard
horn arrester
ic araay
inertial frequency
infectio directa
jaw chuck
Kamudilo
kymberly
LBRF
love and marriage
magnetization reversal
maratta
mclees
medium-pace bowler
Meliosma rigida
microcalorimetry
mid-IR
minimarkets
Monilia
Mount McKinley
multipurpose test equipment
Nerlove's partial adjustment model
norelco
out of-step protection
palaeozoic stratum
Palm Beach County
parrot jaw
pass belief
percentage of direct transshipment
post-crime
poweroutput
preferential allotment
presbyteress
pressure coil
queerphobic
radiochromatogram
random access by record file address
redamnation
reflectographic
sensitive to heat
shotpin
show-ring
sound transparent rubber
sovietdom
st. charles pt.
storage disc
stroboscopic light
stuck to her last
tarok
tectonist
Telumodina
transaction risk
transversospinal muscle
travelers
W. & O.
wetewold
windiness
winter air conditioning
xanthian
Yuanren