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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Most episodes of absent-mindedness—forgetting where you left something or wondering why you just entered a room—are caused by a simple lack of attention, says Schacter. "You"re supposed to remember so...
A.
The process of gradual memory loss
B.
The causes of absent-mindedness
C.
The impact of the environment on memory
D.
A way of encoding and recalling