Evenifyou’renotahard-coreGreenie,therearesmallactsyoucantakeeverydaytosaveboththeearthandyour1.GoingDIYwithcleaningproductsisagoodwaytostart.Youcanuse2athomethatwon’tcostyouanyextramoney–andthatworkjustaswellasthestore-boughtstuff.Vinegarcutsgreaseonstovetopsandovendoors,andcanevenwhitenyour3andremovestainsfromclothes. Inthekitchen,goinggreencansaveyoumoneyandkeepyou4.Cookingathomecancutdownthecostofeatingout,aswellasthetakeoutcontainersyoubringhome.Buyingproduceandotherrawfoodscutsdownon5thatendsupinlandfills.Youcanalsolookforproductsthatuse6orbiodegradablepackaging.Youcanevenusesomeoftheitemsyou7inthetrashtoupcycle.Plasticgrocerybagscanbeusedforallkindsofcraftprojects. It’seasytoignore,butagreatamountofenergygetswastedaroundthehouse.Youcan8largeappliancesandotherdevicesthataren’tbeingused.Changingoutyourlightbulbsisanotherwaytosavemoney.CFLlightbulbsaremore9atfirst,buttheyusemuchlessenergythanincandescentlightbulbs,andlastatleasteighttimeslongerthanregularbulbs.10onnaturallightisanotherwaytomakeyourlightbulbslastlonger–soopenyourblindsandenjoythesunlight!

选择合适的词组并以正确形式填空： A.bepronetoB.bereferredtoasC.build...IntoD.goawryE.inthebeginningF.onearthG.sendshiversdownone’sspineH.spiraloutofcontrol 1.Ifnoactionistakennow,therisingoilpriceswilleasily________. 2.Hisvocabularyissolargethathe____often_______awalkingdictionary. 3.__________,hewasinfavorofourplan.Butlaterhechangedhismind. 4.Itissaidthatthisbuildingisthemostintelligentsofar________. 5.Somepeople_______seethebadsideofthings,whomweoftencallpessimists(悲观主义者). 6.He’sthekindofleaderwhocanalwaysmakethingsrightwhentheystartto_______. 7.Inthekitchen,therewasacupboard_______thewhitewashedwall. 8.Thewolfgaveahowl(嚎叫)outsideourtent(帐篷),which_________.

数列7, 7, 7, 7, 7, 7, …为等差数列

PH值是溶液酸碱度的一种表示方法，（）时，溶液呈中性；（）时，溶液呈酸性；（）时，溶液呈碱性。 A: PH=7、PH>7、PH<7 B: PH=7、PH<7、PH>7 C: PH>7、PH=7、PH<7 D: PH<7、PH=7、PH>7

书挂期限为（）天、口挂期限为（）天、印挂期限为（）天。 A: 7、7、7 B: 7、7、10 C: 7、5、7 D: 7、5、10

7 7=?

17×(-7)÷(-17)×7等于（　　） A: 1 B: 49 C: -7 D: 7

数字推理：4/7，1，10/7，13/7（） A: 12/7 B: 11/7 C: 15/7 D: 16/7

对于YOLO v1算法，网络的输出维度是多少（假设每张图划分为7*7网格，每个网格预测2个边框，识别的物体类别有30个）？ A: 7*7*40 B: 7*7*30 C: 7*7*32 D: 7*7*42

元素周期表含有（）个周期，（）个族。 A: 7；7 B: 7；18 C: 7；16 D: 7；14