时间:2018-12-01 作者:英语课 分类:大学英语六级听力短文


英语课

Controling Cancer


There are two main causes of cancer: heredity and environment. We can do nothing to change our heredity, that is, the basic physical characteristics that are passed on to us by our parents. However, we can do a great deal to control our environment, which may account for eighty to ninety percent of all cancers. Enviromnental pollution can be divided into two kinds: personal and nonpersonal. Personal pollution may be defined 1 roughly 2 as unhealthy habits such as smoking, drinking, and eating the wrong foods. Clearly, with enough will power we can control this personal environment. nonpersonal pollution, on the other hand, refers to those things which are beyond our individual control. One example would be industrial pollution, which is very hard to control because of the expense involved. It would be expensive in terms of profits and, perhaps, jobs.The American automobile 3 industry, for example, resisted the law requiring smog-control devices 4 because it feared the added expense would reduce profits. Nevertheless, some laws protecting the environment have been quite successful in reducing pollution.



1 defined
adj 定义的; 清晰的
  • These categories are not well defined. 这些类别划分得不太明确。
  • The powers of a judge are defined by law. 法官的权限是由法律规定的。
2 roughly
adv.概略地,粗糙地,粗鲁地
  • If you treat your coat so roughly,it will be worn out soon.你如果这么糟蹋你的外套,它很快就不能穿了。
  • The island is roughly circular in shape.这个岛屿大致是圆形的。
3 automobile
n.汽车,机动车
  • He is repairing the brake lever of an automobile.他正在修理汽车的刹车杆。
  • The automobile slowed down to go around the curves in the road.汽车在路上转弯时放慢了速度。
4 devices
n.设备;装置( device的名词复数 );花招;(为实现某种目的的)计划;手段
  • electrical labour-saving devices around the home 节省劳力的各种家用电器
  • modern labour-saving devices such as washing machines and dishwashers 诸如洗衣机和洗碗机之类的现代化省力设备
学英语单词
absorption reaction rate
abuse of law
acrobatic show
Aleksandrinka
Allo-PBSCT
application workspace
arbitrally
blinking method of stereoscopic viewing
brass watch case blank
Chilean tinamous
cixiid
clap-hand
common laburnum
compartment hot well
compartmentalised
conductivity
contra-cyclical measures
Coquimbo owl
cross platform
cyclotheric sedimentation
dc data set
determinable freeholds
diacetylurea
dicumarols
elasto-aerodynamics
erosional vacuity
erotematic
final thermomechanicaltreatment
Gamu
general most favoured nation clause
glory of the snow
green goodss
gyroso-
hally
haylee
hofners
hydrated stock
hyperthite
idiologism
in the jug
incidental cost
ioduretted
items sample
keep on trucking
kindjals
koevoets
laminated clay
Lasianthus formosensis
leveling off
macro-observation
magmatic circulation
marine windscreen
mGal, mgal
moisture measurer for sand and stone
muscle scars
N.C.
nbcc
nobeliums
nuclenoic
NuLab
on-state characteristic
peritoneal tap
phthioic acid
plate mangle
prends
prevention of collision
prolmon tablet
pyramidal cells
raw mast
reactor coolant system cold leg isolation valve
Regranex
relative-entropy
reliability index of generating system
risto
Rubus chiliadenus
sit down to
solti
standard reference materials
starch ester
static stability margin
stochastic procss
strict secrecy
stupiditarian
superior characters
switching pulse
symbiotic action
synedra undulata
synthetic nitrogenous fertilizer
systematic production of substitution lines
thuggish
total corneal transplantation
total variation decreasing scheme
Tuamarina
twin-screw conveyor
TWTA
ultraviolet radiations
unintentional nonlinearity
unquietous
wassily chair
wax string
y.m