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/ w: J3 M) @, w, P
  x" |* D' \7 i( f1 r9 w  ]
1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
  X% N& b- @+ n1 c" A7 RAimee 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?"
7 Q. n5 i6 U+ k& P# ^0 X) Z% T' t  h4 t3 o
2 s1 B0 K  D6 L4 E: ~2 v
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."! u# E1 v8 A' d0 {0 `
" @8 o- [# i4 t! |( a
2. http://nz.youtube.com/watch?v=itjlj6i9XFo
) A2 E) r& ?$ C3 A1 B
* Z7 I2 e+ |% O* e! QQ:"How many feet are in 2 1/2 yards?0 u4 S2 n2 P) ]9 F( J
A:"78"
9 K$ X8 F$ m% l1 ]7 e) N2 i8 m3 n) N4 S% ~  O. T% y
WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?