87. In the Bermuda Triangle, a region in the western part of the North Atlantic Ocean, some airplanes and ships were reported to have mysteriously disappeared without a _____.
(A) guide
(B) trace
(C) code
(D) print
7. In the Bermuda Triangle, a region in the western part of the North Atlantic Ocean, some airplanes and ships were reported to have mysteriously disappeared without a _____. (A) guide (B) trace (C) code (D) print