单项选择题

In the world of management, employees are nonexempt or exempt, depending on whether they get paid for overtime or not. (21) a creative scientist, like a creative artist, does not see his or her time. The very idea of a creative scientist (22) out time sheets is ludicrous. Fascination in science cannot be turned on or off on (23) The creative mind continues to wander (24) the body eats, exercises, or sleeps. Interruptions in or out of the laboratory, the library, the office or the home study may (25) a promising effort. (26) the well-established practice of moonlighting. Do what you need to do to keep the wolf (27) from the door, the world (28) your thesis adviser, team leader, or laboratory director. Then use the rest of your time, perhaps at night or on the weekends, to do (29) you really want to do. All of us who had done science know how to (30) effectively. So many scientific books are prefaced by remarks such as "I thank my spouse, who tolerated my awful antics while this book was being written." I (31) that some of the most creative results to come out of my laboratory were obtained by graduate students or postdoctoral assistants in the (32) of my instructions or even (33) against them.
The creative mind has a vision. And vision, (34) Jonathan Smith, is the art of seeing things (35) . To try to explain a vision can get one into serious trouble, as Joan of Arc (圣女贞德) found out. It is better to moonlight until things become visible.