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"
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! E! D* j/ M0 E% \( N1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related4 a! o- O; B& w, j$ X8 {" {/ R
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?") Z" i! X  [  N: m! Y
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1 L' l' P9 f7 F1 }+ X6 [5 DCaitlin 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."$ ?5 t+ B* c- R

) [& h8 e2 K- ?& t) a( K6 X% n2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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+ m' i: d$ q7 o$ N1 S! xQ:"How many feet are in 2 1/2 yards?! a4 `. I! W" p8 u+ ]- }  e( H
A:"78"/ T: s# A6 G' h3 a. s0 V

& m, a6 L  ~) k% VWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?