时间:2018-12-18 作者:英语课 分类:英语专业四级听力50篇


英语课

Population Growth



It is well-known that there has been a drastic increase in world population. But it is probably less well-known that the extinction 1 rate of wildlife species is experiencing a parallel trend.



Take the United States for instance. In 1990, U.S. population reached an unprecedented 2 level of 250 million, which is approximately 250 times of that of 1800. On the other hand, wildlife species are disappearing from the country at an alarming rate. By 1900, about 70 wildlife species would never be seen in U. S. We are fully 3 justified 4 in declaring that the explosive population growth has had an adverse 5 effect on the survival of wildlife species and will be a constant threat to the wildlife resources if no immediate 6 actions are taken.



Nothing has ever equaled the magnitude and speed with which the human spedes is altering the physical and chemical world. It has been demolishing 7 the environment we are living in.



1 extinction
n.熄灭,消亡,消灭,灭绝,绝种
  • The plant is now in danger of extinction.这种植物现在有绝种的危险。
  • The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。
2 unprecedented
adj.无前例的,新奇的
  • The air crash caused an unprecedented number of deaths.这次空难的死亡人数是空前的。
  • A flood of this sort is really unprecedented.这样大的洪水真是十年九不遇。
3 fully
adv.完全地,全部地,彻底地;充分地
  • The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气,然后全部呼出。
  • They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。
4 justified
a.正当的,有理的
  • She felt fully justified in asking for her money back. 她认为有充分的理由要求退款。
  • The prisoner has certainly justified his claims by his actions. 那个囚犯确实已用自己的行动表明他的要求是正当的。
5 adverse
adj.不利的;有害的;敌对的,不友好的
  • He is adverse to going abroad.他反对出国。
  • The improper use of medicine could lead to severe adverse reactions.用药不当会产生严重的不良反应。
6 immediate
adj.立即的;直接的,最接近的;紧靠的
  • His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
  • We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。
7 demolishing
v.摧毁( demolish的现在分词 );推翻;拆毁(尤指大建筑物);吃光
  • The machine was designed specially for demolishing old buildings. 这种机器是专为拆毁旧楼房而设计的。 来自《用法词典》
  • Conventional demolishing work would have caused considerable interruptions in traffic. 如果采用一般的拆除方法就要引起交通的严重中断。 来自辞典例句
学英语单词
accounting by month
adduces
afp reblocking program
aginactin
Albanic
alexandrinuss
anderson-brinkman- morel state
antiodorant
apoglycogen
atretic
Avicennia marina
avocourts
azimuth and range
bast zone
biotherms
boat tiller
bunya pine
Bégon
calcifying epithelioma of malherbe
call by name parameter
cherry-sized
choleuria
commoditie
common substructure
construction finished
creditor's equity
Dashtobod
decollated
Dessie
dextrosum
dieng
dihydroepicandrosterone
eighty-two
Electroflour
embrute
exchange energy
fore-bay
formatted field definition
Fowles
geeken's diagram
geometric configuration
goggle eye
have trust in
heater steam coil
heimo
high power coastal station
horizontal evolution
hyperconcentrations
king of the forest
Lashkar-e-Taiba
leakseeker
liability accounts
liquid space velocity
Masāhūn, Kūh-e
meduseld
mode indication
movt
mysteries of a trade
named entry
non-zero spin
ocutome
ogalalas
opler
oversocializing
pc.1
perceptual proof
posthumanisms
precampaign
pressurewire
radii loss
regular ramification
Renver's funnel
Rheem Valley
ring twister
Sanquinarine
Sao Tome and Principe
scan control unit
Scheffau
second stage cooler
shent
simple branched alveolargland
single-core optical connector
sinusitis
soil horizontal distribution
superconducting power transmission
Swedeling
tantalum filament
tavares
tempon
titanias
Toltecan
total net weight
triisobutyltin bromide
twangster
two-station molding machine
universally valid formula
unsolomonize
upcraft
word cycle operation
Wǒnhung-ri
zinc caprylate