单项选择题




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单项选择题
Sandrine is now 5 times as old as Nicholas, but 7 years from now, she will be 3 times as old as he will be then. How old is Sandrine now
A． 15
B． 20
C． 21
D． 25
E． 35
单项选择题
DECORUM:
A． lucidity
B． flexibility
C． impropriety
D． duplicity
E． severity
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