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  3. Sports have always been ruled by the weather. Rain, sleet, snow and cold called the plays. Baseball fans have often sat in the r

Sports have always been ruled by the weather. Rain, sleet, snow and cold called the plays. Baseball fans have often sat in the r

admin2011-06-28  102
问题     Sports have always been ruled by the weather. Rain, sleet, snow and cold called the plays. Baseball fans have often sat in the rain without cover, waiting for the sun to come out and the game to begin. Football lovers sometimes took days to warm up after sitting through a freezing cold Sunday game. For both sports fans and players, the domed stadium was like something out of a dream. A huge plastic bubble kept out rain and snow. There was heat to keep things comfortable year round.
    Domed stadiums have clearly changed the course of sports. Still, they did have their problems at first. Most of these problems were discovered and solved at the Houston Astrodome.  This was the world’s first stadium with a lid. For the fans, it was great. But there were some problems for the players. Baseball outfielders had the most difficult time. They had to learn to catch in a field with a roof. At first this was almost as difficult as playing in the dark. The glass of the roof was light colored, to let sunlight in. Sunlight was needed to keep the grass on the field alive. But the light roof blended(混合) too well with the white baseball. Fly balls seemed to drop out of nowhere. Even skilled fielders were making errors. Finally, the decision was made to paint the glass of the roof dark. The problem was solved. But what about the grass? Well, the real grass was dug up and replaced with artificial turf!  
Domed stadiums must have ______.
选项 A、artificial grass
B、bright sunlight
C、stained glass roofs
D、bright lighting
答案A
解析 第二段。带顶棚的运动场必须有人工草皮。因为顶棚不能是浅色，会影响运动员的判断；深色的顶棚又阻止了阳光的进入，真草则不能生存，所以就必须用人工草皮。选项A是正确的。
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