问题
单项选择题
A doctor's obligation when he can no longer ______ the approach of death is to make the patient comfortable, including easing his pain.
A．hold back
B．hang on
C．hang around
D．hold on
答案
参考答案：A
解析：hold back“阻止；抑制”；hang around“闲荡；逗留”；hang on“抓紧不放；继续下去”；hold on与hang on同义。