请教一道GRE题BUS: PASSENGERS:(A) flock: birds(B) tanker: liquid(C) envelope: letter(D) bin: coal(E) automobile: gasoline问B和C区别

问题描述:

请教一道GRE题
BUS: PASSENGERS:
(A) flock: birds
(B) tanker: liquid
(C) envelope: letter
(D) bin: coal
(E) automobile: gasoline
问B和C区别

Bus takes and transports passengers.
B Tanker serves as a storage for liquid.
C envelope takes and transports letter.
so the answer is C.