[单选题]Direction:Putthefollowingsentencesintherightordertoformacompletecontractparagraphaboutthetopic:Likefather,likeson.1.ThoughmyfatherandIlooklikeeachotherinappearance,weareverydifferentinmanythings.2.Firstly,myfatherisaworkaholic;heworksmorethantenhoursaday.Hedoesn’tcareformusic,sports,sightseeingorTV.3.Secondly,myfatherisknownforhistidinessbothattheofficeandathome.heputseverythinginitsproperplaceandhewillberatherupsetifanyone,evenmymother,movesthemfromtheirusualplace.4.Unlikehim,IalwaysfinishmyassignmentsasquicklyasIcaninschool,andthenIspendmostofafter-schoolhoursintheplayground.Iplayallkindsofballgames.SometimesIgotonearbyparkswithfriendsorgotoseemovies.5.Incontrast,I’moftenscoldedforleavingthingseverywhere.Myroomisalwaysamess:booksandmagazinesareonthetable,bed,sofaandfloor.6.Obviously,theproverb“Likefather,likeson”isnottruewithmyfatherandme.Thecorrectorder:________
[单选题]设(3(alpha_{1}-alpha)+2(alpha_{2}+alpha)=5(alpha_{3}+alpha),)试求向量`alpha=`_____，其中`alpha_{1}=(2,5,1,3)^{T},alpha_{2}=(10,1,5,10)^{T}`，(alpha_{3}=(4,1,-1,1)^{T}。)
