10.Thework is _______________, buthefinishedit with great success.(demand)

中国大学MOOC: ____ is not thework by Whitman.

Thework（）bythetimeyougetthere. A: willhavebeendone B: wasdone C: hadbeendone D: hasdone

“Introduction”inanacademicpaperonliteratureistointroduce______. A: theauthor B: thework C: thebackground D: theargument

1. Please keep a detailed ________ of thework that you have done. A: A) paper B: B) idea C: C) exercise D: D) record

____ is not thework by Whitman. A: Cavalry Crossing a Ford B: When Lilacs Last in the Dooryard Bloom’d C: There Was a Child Went Forth D: Fire and Ice

Thewords"work’scanteen"is（）. A: afoodshopB．acafeC．arestaurantD．acafeteria(自助餐厅) B: Parentshavetodomuchlessfortheirchildrenthantheyusedtodo,andhomehasbecomemuchlessofaworkshop.Clothescanbeboughtreadymade;washingcanbedoneatthelaundry;foodcanbeboughtcooked,canned;breadisbakedanddeliveredbythebaker;milkarrivesonthedoorstep;mealcanbehadattherestaurant,thework’scanteen,andtheschooldiningroom. C: It’sunusualnowforfathertopursue(追求)histradeofotheremploymentathome,andhischildrenrarely,ifever,seehimathisplaceofwork.Boysarethereforeseldomtrainedtofollowtheirfather’sbusiness,andinmanytownstheyhaveafairlywidechoiceofemploymentandsodogirls.Theyoungwage-earneroftenearnsgoodmoney,andsoongainsafeelingOfeconomicindependence(经济上的独立).Intextileareasithasbeencustomaryformotherstogoouttowork,butthispracticehasbecomesowidespreadthattheworkingmotherisnownotanunusualfactorinachild’shomelife,thenumberofmarriedwomeninemploymenthavingmorethandoubledinthelasttwenty-fiveyears.Withmotherearningandolderchildrendrawingwages,fatherisseldomthemostimportantfigurethathestillwasatthebeginningofthecentury.Whenmotherworks,economicadvantagesincrease,butchildrenlosesomethingofgreatvalueifmother’semploymentpreventsherfrombeinghometogreetthemwhentheyreturnfromschool.

【填空题】用 logspace 函数创建向量 A= [10 2 ,10 2.2 ,10 2.4 ,10 2.6 ,10 2.8, 10 3 ,10 3.2 ,10 3.4 ,10 3.6 ,10 3.8 , 10 4 ,10 4.2 ,10 4.4 , 10 4.6 ,10 4.8, 10 5 ,10 5.2 , 10 5.4 , 10 5.6 ,10 5.8 ,10 6 ,10 6.2 ,10 6.4 ,10 6.6 ,10 6.8, 10 7 ,10 7.2 ,10 7.4 ,10 7.6 ,10 7.8 ,10 8 ] 的语句是___________

求下列函数的定义域/ananas/latex/p/3282031: (-∞,-10)∪(10,+∞)|(-∞,-10]∪(10,+∞)|(-∞,-10]∪[10,+∞)|(-∞,10]∪(-10,+∞)

自发突变率是很低的，一般为（）。 A: 10～10 B: 10～10 C: 10～10 D: 10～10