【Yawningsendsoutcertainmessages-eitheramp;quot;Oh，thismovieissoboringamp;quot;oramp;quot;Iprobablyneedtogetsomesleepamp;quot;．Butdidyouknowthatayawncanalsohelpyourbraintocooldownwhenitisoverheated？Ane

问题：【Yawningsendsoutcertainmessages-eitheramp;quot;Oh，thismovieissoboringamp;quot;oramp;quot;Iprobablyneedtogetsomesleepamp;quot;．Butdidyouknowthatayawncanalsohelpyourbraintocooldownwhenitisoverheated？Anewstudy，ledbyaresea】

答案：↓↓↓

罗岱的回答：

网友采纳　　41．C．细节理解题：从第三段的句子：Theresearchteamdidanexperimenton160people，80insummerand80inwinter，toexaminehowoftentheyyawnedatdifferentairtemperatures．可知这个研究的目的...