消除不愉快刺激使行为增加是?()
A.积极强化
B.消极强化
C.削弱
D.惩罚
参考答案:B
— Here is the novel I ______ last week. Thank you.
— I almost forgot _________ it to you. [ ]
A. borrowed; to lend
B. borrowed; lent
C. borrowed; lending
D. lent; lending
下列植物的叶不是掌状裂片的是()
A.五角枫
B.鸡爪槭
C.枸骨
D.五加