They are closely related to the fashionable trend.
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【单选题】In many countries there is a fixed charge for personal services. A certain percentage may be【B1】to the bill at a hotel or restaurant. In other places the【B2】may be expected to give a tip, or small amo...
【单选题】In many countries, ownership of a registered trademark can only be acknowledged after the mark has gone uncontested for a certain long period of time.