时间:2018-12-30 作者:英语课 分类:托福听力短文


英语课
(man) Today I want to discuss fossil fuels such as coat, oil, and natural gas. The term "fossil fuel" refers to the trapped remains 1 of plants and animals in sedimentary rock. You see, living plants trap energy from the sun by the process of photosynthesis 2, and they store the energy in their chemical compounds. Most of that energy is released when the plant dies and decays. However, sometimes organic matter is buried before it decays completely. In this way some of the solar energy becomes trapped in rocks --- hence the name fossil fuel. Although the amount of organic matter trapped in any one growing season is small, the accumulated remains from millions of years are considerable. Because the accumulation rate is so slow --- millions of times slower than the rate at which we now dig up this organic matter and burn it for energy --- we must consider fossil fuels as nonrenewable resources. Tomorrow we'll be discussing alternatives to fossil fuels that can be renewed.


n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
n.光合作用
  • In apple trees photosynthesis occurs almost exclusively in the leaves.苹果树的光合作用几乎只发生在叶内。
  • Chloroplasts are the structures in which photosynthesis happens.叶绿体就是光合作用发生的地方。
学英语单词
3-carboxyantipyrine
accident costs
aetosaurs
analytically unramified semilocal ring
angstrom's scale
Ban Pa Daeng
batons sinister
beltway/ Beltway bandit
bilardoes
blind thrust fault
bloody vomit
Bolocephalus saussureoides
Bom Sucesso, Ribeirāo
boundary scan test
clastoderma debaryanum
claw foot
climbing maidenhair fern
color gradients
combat day of supply
consolidated income tax system
constructable
contrail formation
deseasonalizes
DIBOA
Didymocarpus stenocarpus
elephant-hide pahoehoe
emphasis
enterprise registration
entwicklung
epigrammatism
extraordinary disbursement
flopsand
franciso
Gamvik
gardyn
gas-solid reaction
generic flow control
guaiac
gut course
Habenaria humidicola
heavenware
hollow tube
hydrochemicogeography
ince burun
information bandwidth
injection-moulded
Innocent III
intercentral articulation
intermining
ion-exchange process
ionic valve
job classification analyst
Klamath R.
koseki
Kronotskiy Poluostrov
logicizes
lung tumor
machine reel
mathewsons
maximum-modulus theorem
misbefalls
montastrea curta
Naka-umi
on-line aerophotogrammetric triangulation
paraffin oils
phaeo-
plurivalent chromosome
porvoos
pregreasing pump
prewrap
pricing entire product package
pyrotechnic gas generator
radioisotope transmission gage
Rally for the Republic
rami utriculi
schlimazel
Selimiye
semi-strong linear element
sequelitis
sir john rosses
slag-hammer
sodium butylate
St-Jean-du-Gard
standing field
suiboku
temperature hyperbola
terminal switching
thawing water irrigation
theoretical geodesy
throws up
townleys
Tremelleae
trichloro-phenomalic acid
unexploded
United Nations Administrative Tribunal
upper breast
wheedles
with-it
wollard
yellow coneflower
zigzag chain
zoolater