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B
Skiing on snow is an old idea. People have been skiing for more than 4,000 years! But skiing on water is relatively new. How did waterskiing begin? Who thought up the idea in the first place?
Waterskiing didn’t begin until boats had motors that provided enough power to tow (牽引) someone on waterskis (滑水橇). The idea of skiing on water probably began in Hawaii with surfboarding, a sport in which a person rides a board on waves near the seashore.
The first person to waterski was, most likely, Ralph Samuelson. He wore boards tied to his feet and was towed around Lake City in Minnesota. That was in 1922. After that, the sport of waterskiing took off.
Equipment changed quickly. Skiers looked for faster skis, faster boats, and new challenges. Some skiers thought of some very original ideas. A waterskier of Florida came up with a new idea. In 1947 he waterskied without waterskis! He skied with bare feet. Thirty years later, in 1977 Billy Nicholaus also skied with bare feet. In fact, he set a record because he skied barefoot for two hours, forty-two minutes and thirty-nine seconds!
Waterskiers have done amazing things on skis too. In 1971 Danny Churchill skied at a speed of more than 125 miles per hour. That was the highest speed in the 1970s. Six years later Will Coughey skied 1,124 miles without stopping! In 1979, Sammy Duvall, jumped 182 feet off a ramp (斜坡), landing on the water.
The sport hasn’t stopped changing. Today boats tow waterskiers wearing parachutes. When the boat picks up enough speed, the skiers leave the water and start flying. Other people ride a jet-powered ski and ski across the water on their own. 
60. The passage is mainly about _____.
 A. the comparisons between waterskiing and snow skiing
 B. the beginning and development of waterskiing
 C. the best way to learn waterskiing
 D.the rapid development of waterskiing equipment
61. Which of the following skiers skied fastest per hour according to the passage?
A.  Danny Churchill.             B.  Will Coughey.
C.  Sammy Duvall.               D.  Billy Nicholaus.
62. Which of the following events happened last?
A.  Ralph Samuelson tried waterskiing.
B.  A man of Florida skied with bare feet.
C.  Billy Nicholaus set a record.
D.   People used a jet-powered ski.
63. We can infer from the passage that _____.
A.  waterskiing has a history of less than 100 years
B.  waterskiing is a sport as old as snow skiing
C.  waterskiers must wear water skis when skiing
D.  waterskiers must wear parachutes when skiing
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