UNIT4

Questions	Unit 4̉pǂ݁Cȉ̖₢ɓȂB
1	i@@@jɓ̂ɍłK؂Ȃ̂IсCLœȂB\\ŏo肳ꂽ
ADbicycles and tires@@CDcars and tractors@@EDcouches and chairs@@GDrefrigerators and air conditionersi@@j
2	gṕu^ƒdivƁudq@v̏ɂāCȂB
^ƒdi͎gpCai@@ĵɑ΂Cdq@bi@@jB
3	sszR̖ړI40ȓ̓{ŐȂB
4	M҂͒̂ǂ̂悤Ȑ􂪓sszR̐̔wiɂƌĂ邩B{ŐȂB
5	dq@p̌̌_C{łQȂB
PD
QD
6	{̓eƈv̂PIсCLœȂB
ADLegal support from state governments has been one of the incentives that have expanded the urban mining industry.
CDThe US government has already given up its efforts to force states to adopt recycling laws.
EDThe 577,000 recycled cell phones produced a total of 22 kilograms of gold, which was approximately one third the amount of palladium produced by those same phones.
GDBecause e-waste can be toxic to workers, people living in third world countries urged governments to search out other sources for their precious metals and rare earth minerals.i@@j
7	{̃^CgƂčłK؂Ȃ̂IсCLœȂB
ADUrban Mining: Precious Metals Lost in E-Waste Recycling
CDUrban Mining: Rare Earth Elements in the United States
EDUrban Mining: How to Refine Gold and Silver into E-Waste
GDUrban Mining: An Emerging Industry for Recycling E-Wastei@@j


Summary	i@@j̕Ŏn܂P₢C{̗vȂB
@Urban mining is a new industry which recycles precious metals and rare earth @im @@@@@j from e-waste.  Recycling Ail @@@@@j encourage the industry in the United States.  Instability in global Bis @@@@@j of rare earth minerals lies behind the growth of urban mining.  To sustain the industry, we have to remove several Cid @@@@@j such as high cost and unsafe working conditions.


Further Exercises	{̌E@Ɋւȉ̖₢ɓȂB
A	̌̈Ӗ\̂@`CIсCԍœȂB
(1)recycle@@i@@j	(2)recover@@i@@j
(3)campaign@@i@@j	(4)yield@@i@@j
(5)drawback@@i@@j
@to get something back previously lost or taken away
Aa disadvantage or problem
Bto produce or provide something, such as a profit or crop
Can organized social activity to achieve a goal
Dto convert used things into reusable materials

B	i@@jɓ̂ɍłK؂Ȍij@`CIсCԍœȂB
(1)We do not necessarily grow wiser i@@j we grow older.@kl.1liّj
@since@@Aas@@Bwhich@@Cthan
(2)The match resulted i@@j a goalless draw after extra time.@kl.8liqj
@from	Ato@Bwith@Cin
(3)I sometimes help my brother i@@j.@kl.15lij
@do his homework@@Afor doing his homework
Bdoing his homework@@Chis homework