男性，45岁。既往有肝炎病史15年。厌食、乏力、腹胀2个月，5小时前突然呕出大量鲜血

成就动机理论的主要代表人物阿特金森认为避免失败者的目的是避免失败，减少失败感，所以他们倾向于选择非常容易或非常困难的任务。当一项任务的成功率为50%时，他们会______。

A．可能选择

B．犹豫不决

C．回避这项任务

D．坚决选择

将下面的图例与其代表的地理事物用直线连接起来。

Ladies and Gentlemen：

Welcomed to the West Lake. First of all, let me make a brief introduction for it .

The West Lake like a shining pearl lying in the west of Hangzhou City. Surrounded by hill on the three sides, it is famous for it beautiful scenery, a plenty of historic sites and a variety of local products. Legend has it that the West Lake was a jewel falling from heaven when geologists insist this place had been a shallow sea gulf before it became that it is today. In any case, the West Lake inspired poets and painters for centuries. Enjoy your trip. Thank you !

责任成本是指该中心发生的（）

A、工段成本之和

B、产品成本

C、可控成本之和

D、不可控成本之和

德国没有单行的会计准则。