下列因素中，哪种因素引起的行为的持久变化属于学习？（ ）

(单选题)—Why didn’t you answer the phone just now?—I’m terribly sorr (单选题)I’m glad that my parents have ______ of me buying a new car. (单选题)Your bed needs ______, I am afraid. (单选题)This morning he got up earlier ______usual. (单选题)The passage mainly tells us ______. (单选题)Compared with the disadvantages current input system for ALS (单选题)Which is necessary to install GazeSpeak for use according to (单选题)What does a successful candidate need? (单选题)The author uses Anna’s words mainly to ______. (单选题)25.（ ）