![Reading. Chemistshavebeenstudyingwhypeoplecry.Theysayt...]( "Reading. Chemistshavebeenstudyingwhypeoplecry.Theysayt...")
- 问题详情：Reading.Chemistshavebeenstudyingwhypeoplecry.Theysaythebodyproducestwokindsoftears.Onekindcleansouttheeyeifitgetsdirtinit.Butwhenpeoplecrybecauseoftheirfeelings,thesetearshavepoisonouschemicalsinthem.Thebodyisgettingridofchemicalsproducedbyst...
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