短听力练习-8-5听录音，并选择正确选项
A. Preceding aircraft is making an emergency landing;
B. The runway is being foamed now;
C. The runway is congested;
D. The runway is undergoing cleaning.
短听力练习-8-6听录音，并选择正确选项
A. Due converging traffic
B. Due traffic crossing left to right;
C. Due traffic crossing right to left
Due opposite traffic
短听力练习-8-7听录音，并选择正确选项
A. Due traffic
B. Due weather
C. Due separation
Due prohibited area
短听力练习-8-8听录音，并选择正确选项
A. Leaving FL240 and passing FL250
B. Passing FL340 and reaching FL270
C. Expediting through FL240 to FL250
D. Passing FL250 and reaching FL340
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