单项选择题

It is a legal ________ for parents to ensure that their children are provided with efficient education suitable to their age.

A．sympathy
B．obligation
C．impulse
D．influence
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单项选择题
The disappearance of her paper has never been ________.
A．counted for
B．looked up
C．accounted for
D．checked up
单项选择题
According to official statistics, retail sales in China rose 10% and 12.2% in the first and the second quarter ________. this year.
A．accordingly
B．correspondingly
C．respectively
D．individually
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