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"" b; X* a3 G  w

& X+ j$ c- L* Z, @1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related: ~: ~! F( g4 @: P: j6 d+ v4 W2 _0 m- w
Aimee 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?"
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! ~9 m$ Y4 j2 m2 m! V( Q$ qCaitlin 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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5 L4 G9 r* w" q* P2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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1 \% L4 [2 h0 Q- SQ:"How many feet are in 2 1/2 yards?
3 ~! O2 I' B8 i) MA:"78"7 u! c; E. `* r1 C0 P: d  E

$ v+ D) M( a" C6 u, s  aWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?