2. 考研
  3. Ruby was an Asian elephant ______. To encourage the elephants to paint well, the keeper ______.

Ruby was an Asian elephant ______. To encourage the elephants to paint well, the keeper ______.

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问题 Ruby was an Asian elephant ______.
To encourage the elephants to paint well, the keeper ______.
选项 A、bought them a lot of art supplies
B、made them excited at the beginning
C、taught them to hold a paintbrush with their trunks
D、reinforced the desired behaviors with rewards
答案D
解析 本题的依据句是倒数第二段中的句子Initially，the keeper guides the elephant’s trunk over the canvas(画布)and offers rewards for good performance．本题的选择也可以利用生活阅历和一般常识进行判断，教动物做动作一般的鼓励方式都是给它喂吃的东西。此题的其他选择项中都包含了一些无关的信息，和所提问的问题没有必然联系。
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