The 19th Winter Games, held in Salt Lake City,________ an Olympic tradition which goes back almost 3,000 years．

The 19th Winter Games, held in Salt Lake City, ______ an Olympic. tradition which goes back almost 3,000 years.

______ he is into the video game, it is hard for him to think about anything else—all his attention is on winning the game.

In the four-stroke engine, it takes （） to make one power stroke.

In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）

During the suction stroke, the piston is moving （）.

Winning the game will make it possible for players to _____.

About 50 years ago the idea of disabled people doing sports was never heard of. But when the annual games for the disabled were started at Stroke Mandeville, England in 1948 by Sir Ludwig Guttmann, the situation began to change. Sir Ludwig Guttmann, who had been driven to England in 1939 from Nazi Germany, had been asked by the British government to set up an injuries centre at Stroke Mandeville Hospital near London. His ideas about treating injuries included sports for the disabled.In the first games just two teams of injured soldiers took part. The next year, 1949, five teams took part. From those beginnings things developed fast. Teams now come from abroad to Stroke Mandeville every year. In 1960 the first Olympics for the Disabled were held in Rome. Now, every four years the Olympic Games for the Disabled are held, if possible, in the same place as die normal Olympic Games, although they are organized separately. In other years Games for the Disabled are still held at Stroke Mandeville. In the 1984 wheelchair Olympic Games, 1, 604 wheelchair athletes from about 40 countries took part. Unfortunately, they were held at Stroke Mandeville and not in Los Angeles, along with the other Olympics.The Games have been a great success in promoting international friendship and understanding, and in proving that being disabled does not mean you can't enjoy sports. One small source of disappointment for those who organize and take part in the games, however, has been the unwillingness of the International Olympic Committee to include the disabled events at the Olympic Games for the able bodies. Perhaps a few more years are still needed to convince those fortunate enough not to be disabled that their disabled fellow athletes should not be excluded.The first games for the disabled were held________after Sir Ludwing Guttmann arrived in England.

For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

（）for the Olympic Games begin about ten years in advance.

（）for the Olympic Games begins about ten years in advance.

The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being （）.