【单选题】The disease causes serious _________ of the patient's ability to speak clearly.
【单选题】某企业购入一套设备,付款条件为:前5年不用支付任何款项,从第6年至第15年每年初支付5000元,假定市场利率为10%。要求计算该设备付款额在第15年末的总终值。
【简答题】An explicit performative refers to a speech act containing a performative verb whereas an ____ performative refers to a speech act without a performative verb.
【简答题】performative function(武汉大学2004研)
【单选题】Please speak loudly ________ everyone can hear you clearly.
【判断题】A performative verb is a necessary part of a performative utterance.
【单选题】( )上三年级的小天,语文成绩一直很好,但数学成绩却一直很差,这体现了认知发展的