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 G1 _* @- q4 S1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
9 M; Y- [  C  F$ U1 _' o8 o: x$ ]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?"1 R8 z$ y3 |, C4 |1 T
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% p+ ]* i' ~' H) M' N! ^- VCaitlin 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."0 q7 A9 C7 ^2 u- N
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2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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Q:"How many feet are in 2 1/2 yards?7 G' E! F9 ^7 i. z
A:"78"
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9 @0 _4 u2 c- a- Q8 JWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?