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
acid digestion
acidic amino acid
air bursts
Aitken,William Maxwell
allepithema microstriatum
Ancyrolepis
aranciamycin
avionics system
barren trap
be on fire
beg someone off
Begaar
bench test unit
Bohlin method
brake drum lathe
cammas
cemented tungsten carbide tool
charge structure test
circulating mother liquor
creatorlike
cuks
cyzicuss
devotionally
deya
diadducts
effective regulation
eprlfs
escritors
estradiol patches
Falla
family Allioniaceae
full ripe stage
Galium asperuloides
gather data
glottal fricative
Hamitic
height of gravitational centre
Heliozoia
holding hearth
i-woost
impala
intermediate signal location
irradiation specimen basket
job group control function
Kakamari
Labiate carolla
layer of compensation
Like cures like
Livonian-speaking
locoweed
loll
lymphangictodes
master-to-slave tape drive
meenies
merchandising location
Mermithoidea
microelectrode puller
Middle Norwegian
Mouse amplifier
non plastic powder
nummular confluent papillomatosis
nustled
partial calcination
partition fluidized bed
pellet chain
petomine
piston type dosing pump
pivot block
Plattdeutsch
polynia
primer pump
pulse optical radiation
reconsult
scleragogy
Sculptor's Apparatus
selective trip
self catalyzed
sheep-oh
sideloading
solenly
soort
special relationship
starazin
sulphite wood pulp
superglycerinated oil
switching tubes
system time-subdatabase subcomponents
tap the ball
telecines
Thalu, Ko
to bluster oneself into anger
Toa, R.
transcriptional control
Ulakhan-Botuobuya
unqualified person
vacation home
wathens
wet-laminating process
wethead
wilbourn
wind guard
xdsl transceiver unit-remote terminal end