题目

如图B-1所示，半径R＝1m的圆弧导轨与水平面相接，从圆弧导轨顶端A，静止释放一个质量m＝20g的小木块，测得其滑至底端B时速度vB＝3m/s，以后沿水平导轨滑行BC＝3m而停止．求：（1）小木块在圆弧轨道上克服摩擦力做的功；（2）BC段轨道的动摩擦因数为多少. 答案：（1）0.11J;  （2）0.15;【试题分析】 任务型阅读。      下面是王刚先生写的求职信及个人简历，请根据信的内容，将其简历补充完整，每个空格不得超过两个单词。                                                                                                                      73 Xinchang Road, Beijing                                                                                                                     June 7, 2009 Dear sir,     I am writing to introduce myself, with the hope of getting the job you advertised in Daily News.      When I was a child, I was fond of English and always got good grades. In1994, after six years of hard work in Beijing No.4 Middle School, I entered People's University. I studied English there for four years.      Luckily, I got my first job when I graduated. I taught English in Beijing No.4 Middle School from 1998to 2001. Then I got the chance to receive further education in University of Hawaii in the US. That was aprecious experience of my life. I learnt a lot during those two years, especially the differences between eastern and western cultures.     I came back to People's University in 2003. I worked as an assistant (助手) for 2 years and then asa professor. So far I have got 8 years of working experience.      I won lots of awards. I was an"Excellent Student" of People's University in 1997, and an "Outstanding Teacher" of Beijing No.4 middle school in 2000.      Thank you for reading my letter, and I will appreciate it very much if you can reply soon. Yours sincerely, Wang Gang                                 Curriculum Vitae (个人简历) Name:                                                        Wang Cang 1. ______:                                                  73 Xinchang Road, Beijing Telephone:                                                  (010) 7178 5210 Date of Birth:                                              May 8,1975 Nationality:                                                 Chinese2. ______: 1988-1994                                                 Beijing No.4 Middle School 1994-1998                                                 People's University, Beijing Major: English 2001-2003                                                  University of HawaiiWorking Experience:1998-2001                                                  3. ______                                                                 Beijing No.4 Middle School2003-2005                                                  4. ______                                                                 People's University 2005-present                                               Professor                                                                  People's UniversityAwards: 1997                                                          5."______", People's University 2000                                                         "Outstanding Teacher",                                                                  Beijing No.4 Middle School