很多人都抱怨PTE考試有些難周叮，其實主要原因還是沒有好好進行PTE培訓骇钦，經過系統(tǒng)的教導后宛渐，相信你的PTE寫作、PTE閱讀眯搭、PTE詞匯窥翩、PTE口語、PTE聽力能力都能提高一個檔次鳞仙。今天小編想給大家呈現(xiàn)這些內容寇蚊。
RO：
A、Theyare caused by great temperature differences between adjacent air
masses. There are four major jet streams.
B棍好、Sincethe progress of an airplane is aided or impeded depending on whether
tail windsorhead winds are encountered.
C仗岸、Insteadof moving along a straight line. the jet stream flows in a
wavelike fashion;the wavespropagate eastward (in the Northern Hemisphere) at
speeds considerably slower than the wind speed itself.
D、Jetstream. narrow. swift currents or tubes of air found at heights
ranging from 7to 8 mi(11.3–12.9 km) above the surface of the earth.
E借笙、In the Northern Hemisphere the jet stream issought by eastbound aircraft.
in order to gain speed and savefuel. and avoided by westbound aircraft.
SWT：
Theco-evolutionary relationship between cows and grass is one of
nature'sunderappreciated wonders; it also happens to be the key to understanding
justabout everything about modern meat.
For the grasses.which have evolved to withstand the grazing of ruminants.
the cow maintains andexpands their habitat by preventing trees and shrubs from
gaining a foothold andhogging the sunlight; the animal also spreads grass seed.
plants it with hishooves. and then fertilizes it with his manure.
In exchange for these services the grasses offerruminants a plentiful and
exclusive supply of lunch. For cows (like sheep. bison.and other ruminants) have
evolved the special ability to convert grass— whichsingle-stomached creatures
like us can't digest—into high-quality protein. Theycan do this because they
possess what is surely the most highly evolveddigestive organ in nature: the
rumen. About the size of a medicine ball. theorgan is essentially a
forty-five-gallon fermentation tank in which a residentpopulation of bacteria
dines on grass.
PTE考試網一直致力于做PTE培訓扒怖，現(xiàn)在PTE考試需要有優(yōu)秀的老師去輔導上課，感興趣的學生可以咨詢我們哦!如果你對PTE英語考試官方指南业稼、PTE是機考嗎等信息感興趣盗痒。可以直接聯(lián)系我們低散。
