--Students should devote most of their time to studying rather than playing puter games.
--- . No pains, no gains.
A. Extremely
B. Actually
C. Obviously
D. Exactly
网友回答
A. Extremely
B. Actually
C. Obviously
(答案→)D. Exactly
解析：考查副词辨析。A尤其，特别；B实际上；C明显地；D确切地，精确地；句意:学生应该把所有的时间放在学习上，而不是打游戏。—确实如此，不劳无获。根据句意说明D正确。