题目

小明自制了一个音调可变的哨子，当他拉动活塞使其在管中不同位置时，用嘴吹管的上端能分别吹出“dou（1）”、“ruai”、“mi（3）”三个音阶，如图所示，则这三个音阶与活塞在管中的位置相对应的序号是（ ） A．甲、乙、丙     B．乙、丙、甲     C．丙、甲、乙     D．乙、甲、丙 答案：B解：当用嘴向容器内吹气时，容器内的空气柱振动发声，空气柱越短，振动的频率越来越高，因此“dou（1）”、“ruai”、“mi（3）”三个音阶对应的容器分别是：乙、丙、甲． 故选B．Why does most of the world travel on the right side today? Theories differ, but there’s no doubt Napoleon was a major influence. The French have used the right since at least the late 18th century. Some say that before the French Revolution, noblemen drove their carriages on the left, forcing the peasants to the right. Regardless of the origin, Napoleon brought right-hand traffic to the nations he conquered, including Russia, Switzerland and Germany. Hitler, in turn, ordered right-hand traffic in Czechoslovakia and Austria in the 1930s. Nations that escaped right-hand control, like Great Britain, followed their left-hand tradition.The U.S. has not always been a nation of right-hand drivers; earlier in its history, carriage and horse traffic travelled on the left, as it did in England. But by the late 1700s, people driving large wagons pulled by several pairs of horses began promoting a shift（改变）to the right. A driver would sit on the rear（后面的）left horse in order to wave his whip（鞭子）with his right hand; to see opposite traffic clearly, they travelled on the right.One of the final moves to firmly standardize traffic directions in the U.S. occurred in the 20th century, when Henry Ford decided to mass-produce his cars with controls on the left (one reason, stated in 1908: the convenience for passengers exiting directly onto the edge, especially… if there is a lady to be considered). Once these rules were set, many countries eventually adjusted to the right-hand standard, including Canada in the 1920s, Sweden in 1967 and Burma in 1970. The U.K. and former colonies such as Australia and India are among the Western world’s few remaining holdouts(坚持不变者). Several Asian nations, including Japan, use the left as well--- though many places use both right-hand-drive and left-hand-drive cars.【小题1】Why did people in Switzerland travel on the right?A．They had used the right-hand traffic since the 18th century.B．Rich people enjoyed driving their carriages on the right.C．Napoleon introduced the right-hand traffic to this country.D．Hitler ordered them to go against their left-hand tradition.【小题2】Of all the countries below, the one that travels on the right is_________. A．Austria B．EnglandC．JapanD．Australia【小题3】Henry Ford produced cars with controls on the left __________.A．in order to change traffic directions in the U.S.B．so that passengers could get off convenientlyC．because rules at that time weren’t perfectD．though many countries were strongly against that【小题4】According to the passage, which of the following is TRUE?A．Before the French Revolution, all the French people used the right.B．People in Britain and the U.S. travel on the same side nowadays.C．The Burmese began to travel on the right in 1970.D．All the Asian nations use the left at present.【小题5】What would be the best title for this passage?A．Who made the great contribution to the shift of traffic directions?B．How cars have become a popular means of transportation?C．How Henry Ford produced his cars with controls on the left?D．Why don’t people all drive on the same side of road?