20xx年秋九年級(jí)英語(yǔ)全冊(cè)u(píng)nit6whenwasitinvented第6課時(shí)selfcheck課件新人教版-資料下載頁(yè)
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【正文】 y e pro blem s m ay get head ac hes if they sp en d to o m uch ti m e watchin g 3D m ov ie s. Wh y ？ When we l ook at a n obj ect ( 物體 ) ， e ach eye sees it at a d i f f eren t a ngle ( 角度 ) ． O ur ey es send the two i m ages to our brai n ( 大腦 ) ， an d the br a in pu ts them tog et her .3D te chnolo gy us es t wo fil m pro j ect ors ( 投影機(jī) ) ． O ne pro j ect s a le ft － ey e － i m age an d the ot her pro j ect s a rig ht － ey e － im glass es al low us t o s ee a d if fer e nt i m age in each e ye .So ，wh e n we a re w at ching a 3D m ov ie ， our br ai n can 39。 t put tog et her the im ages se nt to our ey es .The brai n need s t o w ork ha rd e r at “rea ding”the im at m akes it easi er for pe op le with ey e pr ob le m s to get dizzy ( 頭暈的 ) or ha ve hea da ches. A fam o us ey e doct or sai d i f y our ey es ca n 39。 t fo c us ( 聚焦 ) on the sam e obj ect at on ce ， yo u wil l hav e tr ouble watchin g 3 D m ov ie s. ( ) cc ordin g t o the passage ， A v atar is a ______. A ． dig it al cam era B ． dig it al TV set C ． 3D m ov ie ( ) e 3D glasses ca n m ake th e im a ges fr om the movie ____ ____ . A ． lo ok m or e beau ti f ul tha n usu al B ． look as if t hey are co m ing strai gh t at y ou C ． look as if t hey are f a r a wa y from you C B
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