A.statesmen in the world are less competent than jeans
B.the inhabitants of the world should speak the same language
C.statesmen have failed to reach agreement on many major issues of the world
D.jeans will help statesmen to reach agreement on some world issues
A.is categorized in extreme sports
B.will be useful when someone flees
C.originate from martial arts
D.can help us walk faster and faster
A.judging and giving comments on something
B.decisive thinking
C.conquering crisis
D.finding out essentials
A.Participator's figure.
B.Participator’s relative location to the obstacle.
C.Participator's reaction to the obstacle.
D.Participator's experience of parkour.