CyclingBothchildrenandadultsridebicyclesforfunandforexe...

問題詳情：

Both children and adults ride bicycles for fun and for exercise. Some people use bicycles for transportation because it is less expensive than traveling by car. 16___.

The sport of cycling consists of races that are held mostly on roads or tracks. 17 first recorded race in the United States was held in 1878 in Boston, Massachusetts. The most famous bicycle race, the Tour de France, began in 1903. Cycling is also a part of the Summer Olympic Games.

Sport cycling includes road races for men, women and children. Some races cover short distances of 2.5 to 3 miles.__18 .A stage race consists of a series of races held over several days or even weeks.

Time trials (計時賽) are a type of competition in which cyclists do not race directly against each other. Instead, individual cyclists or teams are timed as they ride separately over a certain distance.__19__ stage races include time trials.

Several types of bicycle races are held on an oval (橢圓形的) track. The track may be either indoors or outdoors. In the high-speed races, cyclists compete against each other over a short distance. The pursuit (追逐賽) is an event in which cyclists start on opposite sides of the track and try to catch each other. 20 motorcycle cuts through the wind, which normally slows a bicycle down. As a result, cyclists can go much faster than they can in other races.

A. It takes three weeks to complete.

B. Others cover hundreds of miles.

C. The cyclist or team with the faster time wins.

D. The world’s best riders compete in it.

E. In a motor-paced race, each cyclist rides behind a motorcycle or motorbike.

F. Others use bicycles for transportation because bicycles do not pollute the air.

G. Sport cycling began in 1868 with a race near Paris, France.

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FGBCE

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