问题
选择题
大西洋面积不断加大，是由于地壳的
A．垂直运动
B．水平运动
C．上升运动
D．下降运动
答案
答案：B
本题考查板块的运动。大西洋位于亚洲板块、非洲板块与美洲板块的生长边界，板块相互分离，所以面积不断扩大，属于地壳的水平运动。所以本题选择B选项。
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大西洋面积不断加大，是由于地壳的
A．垂直运动
B．水平运动
C．上升运动
D．下降运动
答案：B
本题考查板块的运动。大西洋位于亚洲板块、非洲板块与美洲板块的生长边界，板块相互分离，所以面积不断扩大，属于地壳的水平运动。所以本题选择B选项。
Every day cars kill or hurt many people on roads. Sometimes the drivers drive too fast or do not drive carefully enough .Some of them traffic rules and cause accidents. According to some researchers, it is usually the pedestrians(行人) who cause the accidents. A lot of road users are very . They walk or run across the roads the cars. They walk in the roads but not on the walkways. Some do not take the time to the green lights and simply cross the roads against the red lights. Many people think accidents often happen in roads in large cities, but this is not always true. , Tokyo is one of the world’s largest cities and probably one of the busiest cities. However, there are accidents to pedestrians. The reason is that the police there are very and the pedestrians are very careful . Pedestrians never cross the roads against a red light and they follow the traffic rules. Do you know alcohol(酒精) is another main cause of traffic accidents? It delays(延缓) people’s response(反应). Those who have drunk alcohol are in making decision. They need a few more seconds to react. Alcohol drinking is especially dangerous for motor car drivers. It is not only drivers who may have accidents after drinking, drunk pedestrians may put their lives in danger as well.
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