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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】In the beginning, your kids need you—a lot. They’re attached to your hip, all the time. It might be a month. It might be five years. Then suddenly yon are expected to send them off to school for seven...
A.
includes frequent physical contact with children
B.
means mutual responses to children’ happiness
C.
can lead to the lack of sense of security
D.
is not popular among urban parents