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举一反三
【单选题】Why is Rose arranged to marry Cal?
A.
Because her family has got bankrupted.
B.
Because her mother wants her to marry Cal to stay in the upper class.
C.
Because Rose is spoilt and cannot live without the help of Cal.
【单选题】Why is Rose given the chance to get on one of the lifeboats?
A.
Because she is from loyal family.
B.
Because she is arranged to marry Cal.
C.
Because she is very rich.
D.
Because of the "women and children first" policy.
【单选题】Why is Rose arranged to marry Cal in the film Titanic?
A.
Because her family has got bankrupted.
B.
Because her mother wants her to marry Cal to stay in the upper class.
C.
Because Rose is spoilt and cannot live without the help of Cal.
D.
Because Rose’s father has arranged the marriage beforehand.
【简答题】人们通过观察和研究蜻蜓的飞行特点,发明了直升飞机。这体现了认识的()
【简答题】霍夫曼重排反应时,当酰胺的 a 碳有手性,重排后构型____。
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