题目

what you had said, the little girl left the office angrily without saying a word. A . Because B . Because of C . Since D . For the reason 答案:B某民俗旅游村为接待游客住宿需要,开设了有100张床位的旅馆,当每张床位每天收费100元时,床位可全部租出.若每张床位每天收费提高20元,则相应的减少了10张床位租出.如果每张床位每天以20元为单位提高收费,为使租出的床位少且租金高,那么每张床位每天最合适的收费是(  )A.140元B.150元C.160元D.180元
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