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【单选题】
听力原文：Hi, Janette, it' s Arthur. I want to thank you for taking my place at the appointment with Mr. Coleman today, I didn't realize until this morning that I was scheduled for another meeting at the same time with the BMJ company owner. I just couldn' t miss that meeting because I had to present the budget for our next advertising campaign and get the owner' s approval. Anyway, I really appreciate your help and I'd like to buy you lunch sometime soon. Give me a call when you get a chance. What is the purpose of the message?A.
To ask for a favor
B.
To reschedule an appointment
C.
To confirm an appointment
D.
To thank a colleague
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皮皮学刷刷变学霸
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【单选题】[No.B27017Z020]总结,是对过去一定时期的工作、学习或思想情况进行回顾、分析,并作出客观评价的书面材料。以下哪类不是按内容分类:( )。
A.
学习总结
B.
工作总结
C.
思想总结
D.
专项总结
【单选题】咖啡因的中枢兴奋与舒张支气管平滑肌的机制是
A.
激活β受体
B.
抑制磷酸二酯酶，升高胞内cAMP含量
C.
阻断α受体
D.
激活磷酸二酯酶，降低胞内cAMP含量
E.
抑制β受体
【单选题】总结,是对过去一定时期的工作、学习或思想情况进行回顾、分析,并作出客观评价的书面材料。以下哪类不是按内容分类:( )。
A.
学习总结
B.
工作总结
C.
思想总结
D.
专项总结
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