巴比妥缓冲液（pH 8.6）为（）性（填酸或碱），多数血清蛋白在巴比妥缓冲中以（）离子形式存在（填正或负）。
Among the classification of Gagne’s learning results, ( ) refers to the contents of learners to mediate their inner attention, memory and thinking.
A. verbal information
B. cognitive strategy
C. intelligence skill
D. operant skill
( ) state, we can call it “learning”.
A. When Mr. Li enters a dark room, his vision enhances significantly.
B. Xiao Ming becomes irritable after drunk.
C. Xiao Zhang won the game after he took the stimulant.
D. Monkey simulates the travelers to eat cookies.
According to the definition of learning, ( )belong to learning phenomena.
A. salivating to acid food;
B. The male teenagers becoming interesting in females;
C. Spider’s knotting;
D. children’s imitation to the behaviors in the movies.
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