题目内容
马铃薯的茎包括____、____、____和____。
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栽培上可依据成熟期将马铃薯分为____、____及____品种。
马铃薯适宜在微酸性土壤中生长,最适宜的土壤pH值是5.5~6.5。
马铃薯为喜凉作物,生育期间以日平均气温25℃为适宜。
完形补文 （把正确答案的完整单词形式写在空格处，注意大小写）KeepingFriendshipAliveIt'ssoeasytotakegoodfriends(friend)forgranted.Likea___1____(comfort)pairofgloves,oldfriendswearwell.Butfriendshipsthatsufferfrombusynessand____2____(familiar)can’taffordtobeneglectedtoolong.Theyneedtobe___3__(renew).Ifyouwantandneedtokeeptruefriendshipaliveand____4____(health),pleaseconsiderandthinkoveralistofthemostimportantqualities.____5___(Probable)itwillhelpyoutounderstandwhyyouandyourbestfriendhaven't____6___(call)upforages,whyyou'regettingembarrassedwhile_____7___(be)asked“Whomareyou___8____(go)tohavefunwiththisweekend?”Youmayneglectyourintimatefriendsfromtimetotime.Butifyoufailtocultivatethese____9__(virtue)–loyalty,forgiveness,dedication（奉献）,and___10___(honest)--youcan'texpecttokeeptruefriends.
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