第一部分：听力 (1-20略)
第二部分：英语知识运用
第一节：单项填空（共15小题;每小题1分,共15分）
21. The sign _____ “In case of _______ fire, break the glass and press _______ red button.”
A．reads,不填；the B．writes,不填；the
C．reads, the; the D．writes, a; a
22.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
