The first snowboards were made in the 1960s. However, it was in the late 1970s that they b
ecame more【C1】______Throughout the 1980s, more and more people began taking up the sport, even though snowboards were not allowed on most ski hills.【C2】______its earlier problems, snowboarding is now the world's 【C3】______ growing winter sports and most resorts (度假地) welcome snowboards.
In 1963, a Grade 8 student named Tom Sims【C4】______ a ski-board for a school project in New Jersey. Then in 1966, a man named Sherman Poppen【C5】______ two skis together for his kids on Christmas day. He called his invention "the Snurfer," which 【C6】______ the words "snow" and "surf". In 1969, Jack Burton Carpenter received a【C7】______for Christmas. He soon began designing boards, and today "Burton" is a popular【C8】______of snowboard.
By the 1980s, snowboarding had become very popular.【C9】______, most ski resorts did not allow snowboarding because they thought it was too【C10】______. Since many snowboarders were young, many older skiers did not want them on the ski hills. The snowboarders had to go to the backcountry, 【C11】______ patrolled (有巡逻的) resorts.
Rejection at the resorts did not【C12】______snowboarding from growing in popularity. Eventually, the owners of ski resorts changed their views. They 【C13】______that they could make more money by allowing snowboarding. One by one, the resorts【C14】______ to welcome snowboards. Today, many resorts even set【C15】______special areas where snowboarders can practice their creative tricks.
【C1】
A．spreading
B．popular
C．ordinary
D．interesting
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