听力原文:A small US plane carrying a half ton of marijuana burnt after crashing in Sinaloa
听力原文: A small US plane carrying a half ton of marijuana burnt after crashing in Sinaloa, Mexico, on Sunday: Federal judicial police sources in Sinaloa re ported that the plane went down close to a clandestine airstrip located on a farm about 30 kilometers north of Guliancan, capital of Sinaloa. Mechanical failure is believed to have Caused the crash. The pilot was killed and much of the drug was destroyed in the fire.
What was the most probable cause of the air crash?
A.Mechanical Failure
B.Marijuana burning
C.Destroyed by gunfire.
D.Heavy fog