450)=450">

當(dāng)我們經(jīng)常發(fā)微博發(fā)圖片時(shí)，你知道其中圖片鏈接的奧秘嗎。

450)=450"> 全文聽寫。
450)=450"> 為了六級(jí)，為了英語的提高，大家一定要耐心聽寫喔~~~

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點(diǎn)我回顧上一期【六級(jí)聽力室】2010年12月真題短文1(2/2)
It's always fun to write about research that you can actually try out for yourself. 　　Try this: Take a photo and upload it to Facebook, then after a day or so, note what the URL link to the picture is and then delete it. Come back a month later and see if the link works. Chances are: It will. 　　Facebook isn't alone here. Researchers at Cambridge University have found that nearly half of the social networking sites don't immediately delete pictures when a user requests they be removed. In general, photo-centric websites like Flickr were found to be better at quickly removing deleted photos upon request.