a)It all started in Canada.
b)They were made for hockey players
c)They changed the blades for wheels,because the hockey players wanted to train in summer just as they did in winter.
d)You can get anywhere faster.
e)Speeds of up to 30 miles per hour can be reached.
f)The safety equipment consist of a helmet,knee and elbow pads and special wrist bands.
g)Anyone who wants to get faster somewhere can use them.
