单选题：What does the author mean when he says, “we can’t turn the c

题目分类：英语四级
题目类型：单选题
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题目内容：

What does the author mean when he says, “we can’t turn the clock back” （Line 1, Para. 3）? A．It’s impossible to slow down the pace of chang
B．The social reality children are facing cannot be change
C．Lessons learned from the past should not be forgotte
D．It’s impossible to forget the pas

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