[填空题]Boxing matches were very popular in England two hundred years ago. In those days, boxers fought with bare{{U}} (36) {{/U}}for prize money. They were known as "prize-fighters". However, boxing was very{{U}} (37) {{/U}}, for there were no rules and a prize-fighter could be seriously{{U}} (38) {{/U}}or even killed during a match. One of the most famous{{U}} (39) {{/U}}in boxing history was Daniel Mendoza, who was born in 17614. The use of gloves was not{{U}} (40) {{/U}}until 1860 when the Marquis of Queensberry drew up the first set of rules. Though{{U}} (41) {{/U}}a prize-fighter, Mendoza did much to change crude prize-fighting into a sport. In his day, Mendoza enjoyed{{U}} (42) {{/U}}popularity. He was{{U}} (43) {{/U}}by the rich and the poor alike. Mendoza rose to fame swiftly after a boxing-match when he was only fourteen. This attracted the attention of Richard Humphries, who was then the most eminent boxer in England.{{U}} (44) {{/U}}. In fact, Mendoza soon

[填空题]Boxing matches were very popular in England two hundred years ago. In those days, boxers fought with bare{{U}} (36) {{/U}}for prize money. They were known as "prize-fighters". However, boxing was very{{U}} (37) {{/U}}, for there were no rules and a prize-fighter could be seriously{{U}} (38) {{/U}}or even killed during a match. One of the most famous{{U}} (39) {{/U}}in boxing history was Daniel Mendoza, who was born in 17614. The use of gloves was not{{U}} (40) {{/U}}until 1860 when the Marquis of Queensberry drew up the first set of rules. Though{{U}} (41) {{/U}}a prize-fighter, Mendoza did much to change crude prize-fighting into a sport. In his day, Mendoza enjoyed{{U}} (42) {{/U}}popularity. He was{{U}} (43) {{/U}}by the rich and the poor alike. Mendoza rose to fame swiftly after a boxing-match when he was only fourteen. This attracted the attention of Richard Humphries, who was then the most eminent boxer in England.{{U}} (44) {{/U}}. In fact, Mendoza soon

[单项选择]The first automobile was invented more than two hundred years ago. It used steam for power and had wooden wheels. The first automobile may have been simple and primitive, but it was an extremely important invention. The automobile today is the primary means of land transportation. It has produced more changes in our daily life than any other machines.
Almost all gasoline engines work in the same way—with four movements, or strokes, of a piston in a cylinder. The first stroke pulls the fuel mixture (gasoline and air) into the cylinder. The second stroke compresses the fuel mixture. A spark plug produces a spark that ignites the fuel mixture and causes the third stroke. The final stroke removes any waste gases which might remain in the cylinder.
The preceding paragraph explains what happens inside the cylinder to make the piston move. When the piston is pushed down by the explosion in the third stroke, it pushes the connecting rod. This rod rotates the crankshaft. The crankshaf
A. Automobiles
B. How a Car Works
C. The First Car
D. Cars and Roads