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旧和-前lmppe si 証選是2
Read the text and answer the questions below. (apt
wm Eve
Every year hundreds of new bridges, large and small ane but around he worid. 可
inanon of NOSE
Most ofthese 5 a p
brdges are marle of wood, steel, concrete, or some Com!
uilt uSiNIg yariouき
(hree i W
materials. However, in (he last few years bridges are Dein如
Iinds of plastics.
reinforced1 mmm
es 上 0
4 mew bridge in Kiipphausen, Germany, is made entirely 0『 glass-fiDeT
like those
plastic (GRP). Jr is just as strong as a concrete or steel br put un
ュ = httiSR
marerials、 GRP does not corrode and is not affected by fros 0F mold. Althou店 し
pected to
concrexe, し導SEPウデニーー
more expensive than a conventional bridge of steel and
money
Jast machi longer and to need less maintenance, so he 【OWP will saVe
Abndge im New Jersey.U.S.4 is made of anew mee plended fro
or plastic used for many
S ATe made of polystyTene
m reCyCled mm
"polyethylene and "polystyrene. Polyerhylene is a kim
containers and many coffee cups plates, bowIs, and IO
Neithuer of Chese raterials alone is SITOnB enough to mal
em is much stronger.The neW bridge is
ce will also be cheaD and ea5y
is that they can be desigmed
y-developed computer software can
of a specific site by modifyinga
ooSing frOm a range
ke a bridge. but the new
14 meters long and can
material made from th
to maimtaim.
5 support a heavy fire rruck. This bndg
Another advantage of plastic bridges
more quickiy (hanm conventional bridges. Speciall
pe used to desjgn a plastic bridge (hat meets the needs
e way customers buy a neW car by ch
srandard basic desigm mm 由
zo of opiions and specil equipment. Once the bridge's desigTl 1 completed, the plastic
and built much em
parts car be manufactured in a week. These Coml onents are light in weight amd easy
ro handle, so a small bridge can be installed by atwo-mancrew inafew hours.
Most of (he plastic bridges built so far ar
rraffic. As the technology advamces and the advanmtages of
e comparatively small、 buili for
pedestrians or jjghf vejicle
plastic bridges are recOgiZed, hOWeVer, there could be many Iarge-Scale highway and
raijroad bridges made of plastic in the Tuture.
ghessdiber einforced plastic グラスファイバー強化プラスチック mold かび polyethylene ポリエチレッ
polystyrene ポリスチレン
