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
alchornea rufescens franch.
algebraicness
allium vegetables
apantomancy
AT-17
band sharing
baptisia minor
be cocky
bidirectional waveform
black power
body model
Bovolone
canapone
ceca
cedar closet
cercospora corchori
chest bump
class norm
coarticulations
control of phase sequence
copper enamel
crypsinus taiwanensis tagawa
cyclone type moisture separator
cyclopentorate
Dennett's diet
desiliconization
directly to advanced study
discharge-channel
disjoint elements
distribution reindforcement
drop frame flag
dwarfish
edelmann
enamelled wire wound resistor
eosinophilic pustular dermatosis of ofuji
famille-rose porcelain
Fanyok
free spool valve
fundamentalisms
goochland
Hagetmau
hawkgirl
heart-reactive antibody
heneghan
hypersusceptibilities
intraspindle muscle
intrinsic curve
isorhodanide
jomon sho
launching site
levade
levotartaric acid
light slot
lipotes vexillifer
liquid laser cell
mullocking
neudorfite
neutron logs
nonfungible
nonstudent
oleum macidis
out-list
paint spray booth
palling around
parent-child trust relationship
phase-shift discriminator
Piaf
pizza nigger
planar multiplicity
Planktoniella
polygyral
potato peelings
predicted-reliability
premium allocation
prime mover automatic starter
radio host
rattus culturatus
roll-on roll-off ship
rowanberries
sad dog
segment-specific
semen psyllii
setting of the gelation
single sliding
sodiumizing-oxidizing roasting
St Arnaud
striped half hose
supporting course
sympathy fucked
table-driven algorithm
Taraxacum subcoronatum
test-plate
testing condition
The Interclub New York Produce Exchange Agreement
timer cutoff
transverse inclination
traveling plough
trolley-wire hanger
wak
warble lump
watch your tongue
yanko