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": a; n, X+ q' l- W, @4 H* S
9 A! F! k4 y' f
1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related' a# x, O# x8 ~5 {# \' ~' K  n
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?"4 w. F  F% c# X: c0 ~2 U
8 L! \3 {! u+ j* R
& q1 F8 d* h- r
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.", Q7 G3 ~5 M7 E3 i$ P( O9 w- ^& f7 W
& v, J! t: H' d5 A' H
2. http://nz.youtube.com/watch?v=itjlj6i9XFo
2 {% ^/ n! ?3 @1 g: v5 ?- s* T/ X+ n& Q+ v
Q:"How many feet are in 2 1/2 yards?7 J( A6 J; f+ d
A:"78"! u, {/ a9 X* F  q/ S3 \& u& g

3 q" Z' c4 g5 WWHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?