问题
选择题
China's icebreaker Xuelong ______ by heavy floes since Friday after rescuing passengers on a Russian vessel stranded in Antarctica.
A．has been trapped
B．had been trapped
C．has trapped
D．was trapped
答案
答案：A
题目分析：考查时态。根据时间状语since Friday可知用现在完成时，根据语境可知“雪龙号”是被困，故用被大浮冰所困住。语态。句意：中国破冰船“雪龙号”自从上个周五解救搁浅在南极洲的乘客之后，被打。故A正确。