就受众接受信息的内在机制看，受众具有四个特点：自在性、自主性、（）性和归属性。
参考答案：自述
The only one in our office that is familiar with the new system is Jimmy, in _____ absence, we had no
choice but to wait. [ ]
A. whom
B. whose
C. who
D. which
世界陆地最低点为（）。
