If you're seeing this message, it means we're having trouble loading external resources on our website.

如果你被网页过滤器挡住,请确保域名*.kastatic.org*.kasandbox.org 没有被阻止.



Sal 证明了菱形的对角线是垂直的,并且它们相交于两条线的中点。 Sal Khan 创建




Sebastian ABCD Wei Ling soo mi otra mentorship a dr zakir hussain creature leadership essay tree two UPG young Sherlock week without going means in the Jewish tradition jean-claude amazing students you please residence in John Caribbean who sang hymns you should happen you Jade he'll be increasingly unhealthier airplane singh kahlon syndrome puddington Libyan plane soon so Allah panchanga do sample too long help yen pien chan sample yahoo did help in Santo I could not help you in pinch on sample haha no Judah should please el segundo to Joseon us toyota leasing though she pees incidence entire sample I thought you put it into it to heat up his incidence in policing catheterization who shot in front of the europe at hamilton's and check at the end LG YG lama i should only set up with the jail for Yonkers you come actually PDT rock on UGA presentation links in the pharmacological jessie j cogn socio de dohan yummy yummy say that we are coming NSA trader upp jajaja yo chew it simply mahajan encontre una ducha warm creamy center me Julian growth occurs in trento namagiri till a good dream that's y'all come and sample in with hammer hi Joe Caputo so it home and El Torito should really she determines a 40 me cancel your charter en en en how chilly the pnp npn so in a church Oh Jason I see how are you thinkin against all I see it so hows u eighty strengthen you such as insane utah dutra trent 020 lasorda doing outdoor sample copy da da you got on you ya'll say if you in how much each entrance and housing da doing gel chickity oh don't you take it y'all Hydra dark julianka jajaja Buddha Oh John said language arts in sound on yahoo yahoo sound home sentado you you papasito luigi languages on home la high schooi papadosio phoenicia mana from india a pita to show now you toss a pita to show our cheat on rich yoshito family on guitar cell phone yo chiquita the fire to ganesha to see our commission today you should choose yellow Samantha to do a private reading yo soy sugar to tea education to tell America a chip cheerio so young healthy Justin sense your trunk oh shoot oh yeah so you watch it a miracle inpetto chea Jesus vicinity Tashia who's our king ferg are you thinking so the pentose and fellow whom diligent would have a dejar en pooty who's acting for hi Jacques are to each other