A.They are checked out.B.They are specially coded.C.They are inspected by the guard.D.

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A.They are checked out.

B.They are specially coded.

C.They are inspected by the guard.

D.They are marked with colored labels.

热搜:a是b的充分条件,b是a的必要条件吗

答案解析

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  • 正确答案:B
    解析:细节题。男士说the books in the library are all magnetically coded.,听不出来magnetically没有关系,关键要捕捉住coded这个词,就可以判断B项正确。但是,要知道magnetically“磁化地”并不是超纲词汇,要熟悉该词在诸如图书馆、书店、超市等特殊语境中的应用。