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
Allen red metal
allowest
anomaly gravity
ansoft
balancing dynamometer
black rhinocerotes
bridge stop pin
bright rim structure
cap flashing
carry gate circuit
cen-
channel matrix
cladribine
cocoanut aldehyde
cocobolo
complexing power
Corydalis anthriscifolia
crankshaft nut
cumulated
curative food
cut-off of supply
daily task system of maintenance
deblurring method
debug on-line
decentralized trading
dial pulse incoming register
diodon liturosus
diprosopus triophthalmus
divortiality
double-bluff
double-man tea plant pruning machine
drives at
duty trip
electric ship propulsion
end-piece
epistatic parameter
facies articularis sternalis
field attribute definition
Fintushel-Stern knot
Forel's decussation
Glasscock County
green river ordinance
hats off to somebody
herpes simplex virus pneumonia
high-keier
Hingganite-(Y)
index number of real wages
khalqs
laser pumped maser
longicorn beetle
lubrication mechanics
magnetic stabilizer
Mendelian factor
microelectronic circuit
microphone button
multi-compositional fluid flow
mural painting
narf
nectarine trees
net receipt
nitrogen pressure
Off the scale
old face
oral summons
ordering table
overseas investment guaranty program
partial function
permeablise
petrosian
phwoah
pleochroic haloes
polygonality
pontiff
Porphyrula
radiation exposure badge
raster transform
regulated polymer
Romanian alphabet
roudes
row-binary
Runton Ra.
sacrifices
same-day service
scalextric
sennar
special power of attorney
stainless steel blank
stepped lens
stolper-samuelson theorem
supersessionisms
table-cloths
take over the lead
to have a go
trolley movement
trunk communication
unfully
vans
vegetative micellium
Vilas
white diarrhea
woollen-spun yarn
woundward