听力教程1 第2版 (戴炜栋 施心远)Unit7(12)

(continued)

C. The main party follows the advance party. 1. They carry a radio telephone and more supplies, including a stretcher for thevictim.

D. The 3rd party on the mountain is the back-up group. 1. Their job is to help the main party on itsreturn journey.

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