When he knew the disappointing result of the exam, he seemed quite
A. cast down
B. cast off
C. cast out
D. cast up
网友回答
(答案→)A. cast down
B. cast off
C. cast out
D. cast up
解析： be cast down意思为“沮丧; 灰心”，与语境 the dispointing result of the exam 相吻合。cast off摆脱；放弃；cast off把……赶走；驱逐；cast off把……冲上岸。