请问这怎么翻译的,是如何划分句子成分的,thanks
184.Ourfriendly,aggressive,andsleepyfeelingsallrelatetostage2sleep,whichaccounts_____...
184. Our friendly, aggressive, and sleepy feelings all relate to stage 2 sleep, which accounts _____ most of our total sleep hours. A. down B. to C. from D. for
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