1 . 阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
Skiing
Skiing is an extremely popular sport that is enjoyed worldwide. The oldest and most accurately documented evidence of skiing origin is found in modern day Norway and Sweden. 1 word “ski” comes from the Old Norse word “skie”, 2 (mean) split (劈开的) pieces of wood or firewood.
Skiing has evolved into two major different types: Alpine skiing and Nordic skiing. Alpine skiing, also 3 (refer) to as downhill skiing, perhaps is the most popular form of skiing. It originated in the European Alps, and is characterized by fixed-heel bindings (捆绑物) that attach at both the front and the heel (脚后跟) of the 4 (skier) boot. The boots are reinforced plastic that 5 (steady) hold the foot to the ski, and ski poles are used. Downhill skis vary 6 length and shape depending on the height of the player and the type of snow they will be skiing.
Nordic skiing, also known as “cross country” skiing, 7 (involve) skiing over flat ground. Most Nordic country skis are long and thin, allowing the weight of the skier 8 (distribute) quickly. Cross country skiers use poles to drive 9 (they) forward. Cross country boots are attached to the ski at the toe with a binding, 10 the heel remains free.