【单选题】
A <{p}>can do nothing but remind people of the past<{br/}><{/p}>
B <{p}>can be used to replace school books<{br/}><{/p}>
C <{p}>may help teach children history, geography and language<{br/}><{/p}>
D <{p}>are after all for children not for anyone else<{br/}><{/p}>
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