唔該！幫幫忙解答我以下2個問題唔該!

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唔係好明個問題同"答案"6 s. f6 b/ R, u$ ~, ]

2 Z1 o; B3 n' `, t, s# {1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
( H' r& k! O( y+ L. n/ zAimee Teegarden: "Recent polls have shown a fifth of Americans can't locate the U.S. on a world map. Why do you think this is?"  z) l. c, o5 b5 m3 T4 [, E
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Caitlin Upton: "I personally believe that U.S. Americans are unable to do so because, uh, some, people out there in our nation don't have maps and, uh, I believe that our, uh, education like such as, uh, South Africa and, uh, the Iraq, everywhere like such as, and, I believe that they should, our education over here in the U.S. should help the U.S., uh, or, uh, should help South Africa and should help the Iraq and the filter-074 countries, so we will be able to build up our future, for our children."
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3 K. F4 l% ^4 l& G8 ?% |2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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" u, q8 x( V$ g% mQ:"How many feet are in 2 1/2 yards?
$ m/ Y  _% P% y0 YA:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?