Theprofessorworkedfor7hoursata________.
A、stretchA
此题考查的是固定词组搭配。 at a stretch 一口气地
英语翻译：你为什么把失败视为当然呢?
Peoplewhocan’t_______betweencolorsaresaidtobecolor-blind.
Thatproposalisessentiallyirrelevant________theissueathand.
Iunderstoodfromherthatyouundertookotherimportantwork______.
Duringthepasttwodecades,researchhas________ourknowledgeofdaydreaming.
