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1、__________________________________________________惠州市2017届高三第二次调研考试英语2016.10本试卷分选择题和非选择题两部分。满分120分（最终成绩按总分135分进行折算），考试用时120分钟。注意事项：1.本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。2.答题前，考生务必将自己的姓名，准考证号填写在答题卡相应的位置。3.全部答案应在答题卡上完成，答在本试卷上无效。4.考试结束后，将答题卡交回。第I卷第二部分阅读理解（共两节，满分40分）第一节（
2、共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。AFlyingcanbefunandexciting,nomatterwhatyouchoosetodo.Buthaveyoueverthoughtaboutwhathappensontheplane?Herearesomeofthemostinterestingthingsthathappen.Doplanesdrophumanwastewhileinflight?Whenyou
3、flushatoiletonaplaneatanaltitudeof30,000feet,theremustbeaquestiononyourmind:“Isthisabouttolandonafarmer’shouse?”Takeiteasy.Aplane’stoiletscannotbeemptiedinthesky.Thewasteisstoredintanksonboardandcanonlybeoperatedbythegroundcrew.However,whyisnewslike“blueice
4、fallingoutofaplane”reported?Isblueicehumanwaste?Storiesaboutblueicearetruebutrarelyhappen.TheFAAsaidsomelavatoryholdingtankshaveabluechemicalinthem.Ifatankleakshighintheair,thewaterfreezesonceithitstheoutsideair,andmeltsbeforeitlandsontheground.Isturbulence
5、(颠簸)dangerous?It’sscary,uncomfortableandspillsyourdrink.Butisturbulencesomethingyoureallyneedtoworryabout?Absolutelynot.It’spartofflying,anditisn’tdangerous.Turbulenceiscausedwhentwomassesofairhitoneanotheratdifferentspeeds.Wind,thunderstormsandclosenesstom
6、ountainsareallpossiblereasons.Despitehowdangerousitfeels,turbulencewon’tcrashyourplane.Eveninextremelyroughair,thewingisnotgoingtobreakoff.Whyareplanewindowsround?收集于网络，如有侵权请联系管理员删除__________________________________________________Ifyouhavetraveledbyplanebe
7、fore,youmayhavenoticedthateveryplanewindowhasarounddesign.Thisisn’ttomaketheplanelookgood.It’sforthesafetyofeveryoneonboard.Astheairplaneflieshigherandhigher,theoutsideatmosphericpressuregetslowerandlower.Intheend,thepressureinsidetheplanebecomesgreaterthan
8、thepressureoutside.Atthistime,windowsthatcanresistpressureareneeded.Squarewindowscancrack.Thedifferentpressureinsideandoutsideputstressontherightangles.However,roundedcornershelptoreducethesestressesby
