A．have higher demands of museums B．are open to more people with
different social background C．to lengthen their opening hours D．charge too
little for admission E. have been built and open to public F. by lowering
the admission fees
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Now museums are no longer restricted to the privileged few, but 1.
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With the development of society, people, especially the young people, 1.
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To meet the needs of society, more museums 1.
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Two major problems for museums are that they have too many visitors and they 1.