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According to the National Sleep Organization, how long should adults sleep a nig

游客2023-09-26  50
问题 According to the National Sleep Organization, how long should adults sleep a night? [br] The National Sleep Organization found many Japanese sleep poorly by ______.
选项 A、telephoning them
B、communicating with them face to face
C、using the Internet
D、asking their doctors
答案 A
解析 根据第三段第一句“Of the 1,506 adults interviewed over telephone between．．．”可以得知：是通过电话对人们进行的采访才发现人们的睡眠问题。故答案为D。
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