【单选题】When asked why he went there, he said he was sent there _____for a space flight.
【单选题】某男性,46岁有长期大量吸烟史,出现咯血,要高度警惕( )疾病。
【单选题】What is the man doing?
B.
He is looking for a mattress.
C.
He is just trying to kill time.
D.
He is interested in buying something.
【单选题】—What happened to Mark yesterday? — He arrived at the station too late, _____ , he missed the early train. [ ]
【简答题】A.He turned suddenly and ran into a tree. B.He was hit by a fallen box from a track. C.He drove too fast and crashed into a truck. D.He was trying to overtake the truck ahead of him.