阑尾尖端指向下列哪个部位时可同时出现膀胱、直肠的刺激症状（）. A.回肠前位 B.盲

The number of people invited to the party _____ sixty, but a number of them ______absent.

A．were; was

B．was; was

C．was; were

D．were; were

— Help _____ to some fruits.

— Thank you. [ ]

A. yourself

B. your

C. you

枇杷清肺饮功效与作用

声音剪辑点。以（）、音乐、音效来作为剪辑点。

如果多个中断同时发生，系统将根据中断优先级响应优先级最高的中断请求。若调整中断事件的响应次序，可以利用( )。

A．中断响应

B．中断屏蔽

C．中断向量

D．中断嵌套