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The first snowboards were made in the 1960s. However, it was in the late 1970s that they became more (21) Throughout the 1980s, more and more people began taking up the sport, even though snowboards were not allowed on most ski hills. (22) its earlier problems, snowboarding is now the world’s (23) growing winter sports and most resorts (度假地) welcome snowboards. In 1963, a Grade 8 student named Tom Sims (24) a ski-board for a school project in New Jersey. Then in 1966, a man named Sherman Poppen (25) two skis together for his kids on Christmas day. He called his invention "the Snurfer," which (26) the words "snow" and "surf". In 1969, Jack Burton Carpenter received a (27) for Christmas. He soon began designing boards, and today "Burton" is a p A. spreading B. popular C. ordinary D. interesting [单项选择]
{{B}}TEXT B{{/B}} The first coins to appear in the Western world were issued by the Indians and the Ionian Greeks in the eighth century B. C. These coins, which were made of electrum, a natural combination of gold and silver, were irregular in weight and quality. The pure gold and silver coins with related values which appeared during the reign of Croesus (560 -546 B. C. ) provide the first un doubted evidence of standard coinage by state authority. The coins were not perfectly shaped, however, for they were struck with a hand wielded hammer. The trend toward complete mathematical symmetry did not, in fact, begin until the coining press, invented by Leonardo da Vinci in the sixteenth century, was generally used in the middle of the seventeenth century. One should not assume, however, that only machine made coins are prized for their workmanship. The silver dekadrachm from Syracuse, struck about 413 B. C. , is considered one of A. They were issued by the government. B. They were given standard values. C. They were all of equal purity. D. They were all alike in shape. 我来回答: 提交
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