唔該！幫幫忙解答我以下2個問題唔該!

xylitol25

唔係好明個問題同"答案"1 S) R* a  Y% ^$ I. C& _7 Y

5 f( D9 Q9 R2 K- s: ^1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
! j" ?! \  }. ?0 J% F! q3 [- H+ Q2 LAimee 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 c: s8 ]; U; N" fCaitlin 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."- U  o8 w/ O2 J5 B! T5 ~8 p

1 W  q, H4 F0 @3 G2. http://nz.youtube.com/watch?v=itjlj6i9XFo
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& U  O$ T) g" Z+ w. P) S7 {( Q( w/ GQ:"How many feet are in 2 1/2 yards?
- L- w* A. [9 Q5 l% L4 {, |A:"78"
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WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?