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【简答题】
Dialogue: Buying Souvenirs (P173) Read the dialogue clearly and pay special attention of what the customer says.
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【简答题】l(____) n. [C] a piece of paper or material fastened to an object that gives information about it
【简答题】n. [C] a piece of paper or material fastened to an object that gives information about it
【简答题】object / ˈ ɒbdʒɪkt/ n./v.
【简答题】l ________ n. the position of a prominent or well-known object in a particular landscape
【简答题】强化技能的类型包括语言强化、()强化、动作强化、()强化和变化方式强化。