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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7 ~8 ?* P# G% H( A1 \  P5 y* ?1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
: R1 o& P4 O+ N5 h" V" p$ x0 S2 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?"
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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."* g& D( Q/ I4 y  j1 m

9 I+ N$ @# i8 s  k0 g( t3 L. Z& u2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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) `' D! O* h/ f0 k: a3 Z" Z7 cQ:"How many feet are in 2 1/2 yards?7 e# F( k3 m: G* I/ B: w! B* K
A:"78"
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6 L2 I- Z& Z/ gWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?