;;;返回;返回;3.Withthedevelopmentofi（工业）,morepollutionproblemswillbecausedandthendealtwithbyourgovernment.;二、单项填空

4.Itis_______ofthemtokillelephantsforivory.Theywillbepunishedaccordingtothelaw.

A.stupid B.careful

C.cruel D.impolite;5.JustasmanyoldpeoplewholiketraditionalChineseculturedoinourcity,_______mygrandma_______mygrandpawatchesBeijingOperadaily.

A.both;and B.either;or

C.neither;nor D.notonly;butalso;6.Manygreataged_______passedawayduringthattime,whichhascausedgreatlossinChinese_______field.

A.scientists;scientific B.science;scientists

C.scientific;science D.science;scientific;三、根据汉语意思完成句子

7.实际上，对于父母来说，再怎么关注孩子们的安全都不为过。

__________________,toparents,children’ssafetycan’tbepaidtoomuchattentionto.;8.你最好不要熬夜，熬夜有害健康。

You’dbetternotstayuplate.It___________________________yourhealth.;9.当我们站在这栋楼顶部的时候，几乎看不见下面的人。

Aswestood___________________________________thebuilding,thepeoplebelowwerehardlyvisible.;10.在夏天他们通常会切掉树上无用的枝叶。

Theyusually__________________theuselessbranchesandleavesofthetreesinsummer.;11.如果食物链断裂，很多动物会因为找不到足够的食物而死亡。

If___________________________breaks,manyanimalswilldiebecausetheycan’tfindenoughfood.;四、[跨学科·化学]完形填空

Patriciahasabigglassbottle.Shegotitfromhergrandfather.Thegirl12ithalffullwithcleanwater.

12.A.agreed B.filled C.entered D.pointed;The13shoneinthesunlight.Eachdropwasproudofitsownpurity（纯洁）.

13.A.coffee B.milk C.water D.juice;Oneday,Patricia’scousin,Robin,cameforavisit.WhilePatriciawasaway,theboysawthebottleandthought,“Whatwillhappen14Iputsomeink（墨水）intothewater?”

14.A.if B.since C.but D.so;RobinsearchedPatricia’sdeskand15apeninherdesk.Justashewasputtingafewdropsofinkintothebottle,Patriciawalkedin.

15.A.protecte