Whenpeopletalkaboutairpollutiontheyareusuallythinkingaboutoutdoorair____ .Butdoyouknowthatthereis____ airpollutioninsidehomesofficeshotelsandotherbuildings?Theairinyourhomecanbe2to100timesmorepollutedthantheairoutdoors!InfactsomeAmericandoctorssaythat50%ofillnesseshave____todowithpollutedindoorair. Alotofpollutioncomesfromindooractivities___smokingandcooking.Asmostpeople___ about80-90%oftheirtimeinsidebuildingsitisimportanttotakeindoorairpollutionseriouslytoo.Airpollutioninfluencesourhealth____ .Whentheairispollutednotonlyyoungchildrenandoldpeoplesufferfromit____ peoplewithhealthproblemssufferaswell.Indoorairpollutioncan____people'seyesnosesandthroats.Airpollutionbothindoorandoutdoorcanalsoleadtolungcancer（肺癌）andheartdisease!InthegreatLondonfogin19524000peoplediedinafewdays____thepollution!____issaidthathalfamillionyoungchildrenandwomendieeachyearinIndiabecauseofindoorairpollution!
1.A.pollution B.sadnessC.illness D.business
2.A.too B.none C.also D.neither
3.A.nothing B.everythingC.something D.anything
4.A.aswellas B.suchasC.insteadofD.for example
5.A.take B.cost C.give D.spend
6.A.inmanywaysB.inmanythingsC.inmanyhousesD.bytheway
7.A.and B.but C.or D.until
8.A.hit B.hurt C.pollutedD.destroyed
9.A.becauseof B.thankstoC.relatedtoD.or
10.A.This B.That C.What D.It
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