时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

A 4 percent decrease in forest was associated with a nearly 50 percent rise in malaria 1 cases in western Brazil.


You know saving the rainforest is good for biodiversity. But it may also be a boon 2 to human health. That's because less clear-cutting may mean less malaria, according to a paper out this week in the journal Emerging Infectious Diseases.


Researchers looked at stats for 2006 from 54 health districts in western Brazil. The sites had more than 15,000 cases of malaria. The investigators 3 compared those cases to deforestation in the same health districts over the previous 10 years. They found that a loss of just four percent of forest cover was associated with nearly 50 percent more malaria cases. And malaria risk was highest five to 10 years after the jungle was cleared.


Not all mosquitoes carry malaria. But the human-loving species Anopheles darlingi does, and previous studies have shown that it thrives in disturbed areas. In fact, you're over 200 times more likely to find one of them biting you in a clearing than you are deep in the jungle, where other more benign 4 species compete with them for blood.


So how much clear-cutting is too much? We don't know yet—but an intact swath of rainforest appears to provide free public health services.

 



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.恩赐,恩物,恩惠
  • A car is a real boon when you live in the country.在郊外居住,有辆汽车确实极为方便。
  • These machines have proved a real boon to disabled people.事实证明这些机器让残疾人受益匪浅。
n.调查者,审查者( investigator的名词复数 )
  • This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
adj.善良的,慈祥的;良性的,无危险的
  • The benign weather brought North America a bumper crop.温和的气候给北美带来大丰收。
  • Martha is a benign old lady.玛莎是个仁慈的老妇人。
学英语单词
3-phosphoglyceric acid
6-thiopurine
Acantholimon alatavicum
acoutoelectric effect
across one's knee
air pollution monitoring laser
all charges paid
all commodity volume
anchor head
ankoku buy? (japan)
autonomous jurisdiction
b-minus
bacterial pigmentation
Belle-Isle
bentazone
black-earths
bladelet(te)
Bobrowo
carbide powder
cashing dividends
cayer
chord deflection offset
class difference
coeliocyesis
cooling correction
cyberchurches
data dictionary assember
Data web
deep-level traps
dry insulation transformer
el-arabi
elaphomyces granulatus
electrostrictive ceramics
enclosed lifeboat
faslanes
fiber reinforce thermoplastics (frtp)
fixed layer
frenetically
fuel servicing truck
full-scale test
gallowgate
GDMS (generalized data management system)
gothic metal
guaiacol salicylate
healthless
historical value
hoist
if pigs had wings they would fly
ill-set
interactive proof protocol
interstitial neurons
Jupiter Pluvius has got out his watercan.
ling field
loosely-suppressible point frame
luthern
mainshaft oil baffle
major psychosis
manganous oxide (manganese oxide)
manufacture cost
mesenteric ganglion
multipath ferrite core
nordenstreng
nose-rag
noseplate
on-board attitude control system
operational maintenance
optimum designing of engineering structure
oralee
phyllosticta cucurbitacearum
preliminary thinning
presence testing
procyon
quick-return motion
ramp grade
recommended (retail) price
recurring cost
Richard D'Oyly Carte
rififi
RVB
sabater
seed rate lever
semidiurnal tide producing force
sheathed electrode
sickle cells
skyvans
specialistically
strongylura anastomella
swooer
sympathetic chain (or sympathetic trunk)
syncretise
tank wall effect
the noon of life
There's as good fish in the sea as ever came out of it.
thiaminoprotein enzyme
TM wave
troikatron
turtleweed
usagist
vertigo eogea stagnalis
vouching
Windows 98
ximena