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"! Q9 X: V2 C& J. }( e9 k+ W

" K! D1 L3 h' ?% i* {* {$ |1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
% O2 l- i3 c' u  N( I! p( yAimee 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?"% }, ~& o  Z! u. u2 J; C
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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."* j0 p$ h+ G5 f, ?9 ?

# Z/ J3 C0 g+ X& v2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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2 O2 m- G5 l3 S0 uQ:"How many feet are in 2 1/2 yards?0 C. x7 Z, S0 W5 e/ v  ]
A:"78"8 a: s( z9 q) P
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?