时间:2018-12-28 作者:英语课 分类:轻松英文阅读


英语课

 Something strange is happening in the forests around Chernobyl. More precisely 1, it is what is not happening that is the problem. When leaves fall and trees die there, they are not decomposing 2 properly.


 
Scientists visiting the dead forests noticed that the trees were almost unchanged nearly 30 years after the disaster. They also found an unusually thick carpet of fallen leaves. The scientists knew something strange was happening and they decided 3 to investigate. They uncovered that the rate of decay for the dead trees and leaves was much slower in the contaminated areas.
 
It appears that microbes, fungi 4 and insects, are suffering from contamination. Usually, when a tree dies in the forest these organisms break it down and turn it into soil. They are essential to the forest ecosystem 5. But near Chernobyl the ecosystem has broken down.
 
The problem could have wider implications. The scientists fear that the thick dead brush could be a huge fire risk. A forest fire in the area would be hard to control. What is worse is that it could spread radioactive material well beyond the exclusion 6 zone.

1 precisely
adv.恰好,正好,精确地,细致地
  • It's precisely that sort of slick sales-talk that I mistrust.我不相信的正是那种油腔滑调的推销宣传。
  • The man adjusted very precisely.那个人调得很准。
2 decomposing
腐烂( decompose的现在分词 ); (使)分解; 分解(某物质、光线等)
  • The air was filled with the overpowering stench of decomposing vegetation. 空气中充满了令人难以忍受的腐烂植物的恶臭。
  • Heat was obtained from decomposing manures and hot air flues. 靠肥料分解和烟道为植物提供热量。
3 decided
adj.决定了的,坚决的;明显的,明确的
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
4 fungi
n.真菌,霉菌
  • Students practice to apply the study of genetics to multicellular plants and fungi.学生们练习把基因学应用到多细胞植物和真菌中。
  • The lawn was covered with fungi.草地上到处都是蘑菇。
5 ecosystem
n.生态系统
  • This destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
  • We all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。
6 exclusion
n.拒绝,排除,排斥,远足,远途旅行
  • Don't revise a few topics to the exclusion of all others.不要修改少数论题以致排除所有其他的。
  • He plays golf to the exclusion of all other sports.他专打高尔夫球,其他运动一概不参加。
学英语单词
acceptable limit
Amaranthus retroflexus L.
amphilinid
armilustrum
Aspleniinae
barium-chloride
batdom
be bathed with
Beddoes, Thomas Lovell
bog peat
bond interface
brawniest
butazophen
calamene
cespitation
chelicerates
chromium(iii) thiocyanate
codopant
combined train
communer
conditioned reaction
cookfire
copy proof
cruddies
cutaneous lymphogranuloma
direct impact amplifier
directionally selective neuron
dishman
disjointedness
Dorothy Hodgkin
dossals
endogenous bud
euproctis tomponis
fatty acid polyethylene glycol ester
forty-fourth
glomeruluss
Guallabamba
hexagon-headed bolt
importables
in a humorous vein
insurance society of new york
intercarpal
isococaine
karob
kennelly-heaviside layers
labour management
landmining
lashing eye
layer silicates
linear decision
Linggajati
linguo-axial
long stem cutting
lynde
mechanical gage
mechanical-foam nozzle
mesopelagic fishes
methergin
michalson
Myoko
neuromittor
non freezing mixture
Nueva Esperanza
on one 's own
Panguipulli
parlour grand piano
parricidal
pitchblock
plastic moderated reactor
pluck up one's courage
plushiness
Pollia minor
potassium-sodium exchange
prairie sunflowers
precast liquid missile
preview mode
prismognathus davidis cheni
re-titling
right to hold public office
Rockwell hardness B-scale
scallop shell
scalping sieve
secondary great circle
shawangunks
shriberg
site natural condition
spotting drill
staircase locks
started back
stem to stem
sublingual space
superheat fuel assembly cluster
tacchini
Tetracosamethylhendecasiloxane
thin film circuit
thyrotropin releasing hormone stimulation test
tube domain
unwheeme
verifying punch
vertebral fused portions
Vexillabium
with respect to