My l4-year-old son, John, and I spotted the coat which was hanging at a secondhand clothing store in Northampton Mass. While the other coats drooped(低垂), this one looked as if it were__21__. Th
Energy-saving Finns invented the first ice skate more than 5,000 years ago, as a practical method of transport to make getting across frozen lakes less of a struggle. The earliest skates would have b
液中吸取草履虫的最好部位是 ( )