任务型阅读，阅读下文并回答问题。Whydopeoplecry?Scientistssaythebodyprod...
问题详情：任务型阅读，阅读下文并回答问题。Whydopeoplecry?Scientistssaythebodyproducestearsbecausetheyneedthem.Onekindoftearsisfortheeye,theotherisfortheheart.Theybothworkascleaners.Ifsomethingelselikedust...
问题详情：任务型阅读，阅读下文并回答问题。Whydopeoplecry?Scientistssaythebodyproducestearsbecausetheyneedthem.Onekindoftearsisfortheeye,theotherisfortheheart.Theybothworkascleaners.Ifsomethingelselikedust...