题目

根据下面问题和答案的提示，写一篇介绍爱因斯坦的文章，不少于80词。 1. When and where was Albert Einstein born? (March 14th.1879, Germany) 2. What a child was he?(curious、slow in learning) 3. What did he do in 1896?(graduate from hign school) 4. What did he do in 1900?(become a maths teacher) 5. What did he do in 1905?(receive a doctor’s degree) 6. What are his achievements(成就)?(develop the Theory of Relatively by 1915, prove light is bent when passing the sun win the Nobel prize for physics in 1922) 7. What do you think of him?3．如图所示，两条平行金属导轨ab、cd置于匀强磁场中，磁场方向垂直纸面向里，两导轨间的距离为l=0.5m．金属杆MN垂直于导轨放置在导轨ab、cd上，并沿两条导轨向右匀速滑动，速度v=12m/s，产生的感应电动势为3V．由此可知，磁场的磁感应强度B=0.5T．金属杆MN中的电流方向向上．（填“向上”或“向下”）