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"" L# R3 q" _' p5 D+ ]4 Y

: L' O, A+ H" K8 X! d* e( z1. http://nz.youtube.com/watch?v=lj3iNxZ8Dww&feature=related
" `. b& f, S; z0 {! u/ HAimee 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?"
3 A* r: A3 D8 F- h* p8 x7 J" T8 K* u* b' X

- G5 w3 m) g3 o/ n4 X6 a, j& BCaitlin 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."% {* O# D' b" P6 `8 P0 {: `( b, b2 ?
+ e- U6 V% c2 {2 u( @; y/ [' x
2. http://nz.youtube.com/watch?v=itjlj6i9XFo4 a& O! l# D; d# ?! \; x( B7 f) h8 _

/ U0 N6 F) E4 E- z, U3 iQ:"How many feet are in 2 1/2 yards?0 d7 B4 m" K% S6 _
A:"78": S0 P: L; J6 F
- [/ f$ @0 _$ o) ?$ E
WHY NOT IS 7.5? I THINK IS 3 FEETS EQUAL 1 YARD?