问题标题:
【Flyingkites,______someresearcherspointout,cannotonlybringaboutjoytous,butalsopromoteourphysicalandmentalhealth.A.whichB.whatC.asD.where】
问题描述:

Flyingkites,______someresearcherspointout,cannotonlybringaboutjoytous,butalsopromoteourphysicalandmentalhealth.

A.whichB.whatC.asD.where

刘晓琴回答:
  C   
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