问题
选择题
Rescuers had to _____ the search because of worsening weather conditions.
A．call off
B．take off
C．come off
D．cut off
答案
答案：A
短语辨析。call off 取消；take off脱下，起飞；come off举行，表现；cut off切断，剪下。句意：救援者不得不取消搜索因为更加恶劣的天气条件。所以选A。
