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【单选题】
下列哪一项不是有效教学问答应该具有的特征（）。A.
唤起学习者的积极情绪
B.
促进学习者的思考
C.
加快教学过程的进度
D.
激发学习者的动机
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】 Twelve ____ were hurt, but no ___ were lost in that accident.
A.
person, life
B.
people, lives
C.
peoples, lives
【单选题】Twelve ____ were hurt, but no _____ were lost in that accident.
A.
person, life
B.
peoples, lives
C.
people, lives
【单选题】Twelve were hurt, but no were lost in that accident.
A.
person, life
B.
peoples, lives
C.
people, lives
D.
persons, life
【单选题】Twelve were hurt, but no were lost in that accident.
A.
person, life
B.
. people, lives
C.
peoples, lives
D.
. persons, life
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