题目

（2012•临沂）关于物体的惯性，下列说法正确的是（ ） A．足球在静止时没有惯性，运动时才具有惯性B．跳高运动员起跳前要助跑，是为了获得惯性C．赛车在高速行驶时不容易停下来，是由于速度越来越大惯性越大D．百米赛跑运动员到达终点不能立即停下来，是因为运动员具有惯性 答案：考点：惯性。 专题：应用题。 分析：一切物体都具有惯性，惯性是物体本身的一种基本属性，其大小只与质量有关，质量越大、惯性越大；惯性的大小和物体是否运动、是否受力以及运动的快慢是没有任何关系的． 解答：解：A、一切物体在任何情况下都有惯性，所以此项是错误的； B、跳高运动员Last night, I was waiting for a taxi. After 5 minutes, I was  41 . The driver seemed to be angry. I asked him what the  42  was. He said he had just come from the airport without a  43 , which was basically $70 in lost fare.     Over the course of that ride, the anger slowly  44 . He mentioned he had read an article saying the  45  people are the ones that give, so he hoped he’d have more  46  to give in his life. I was starting to  47  being with him! We continued talking about why  48  is so beneficial both to the giver and the receiver and different ways to  49  it.     As we arrived at my destination, I  50  my fare. But I pulled out an extra $20 and said, “Since we’ve been talking about giving this whole time, I wanted to share that  51  with you. I’ve already paid my fare, but here’s an extra little bit. You can  52  it, since you’re already down $70 from the airport. But if you want to experience the  53  of the gift, then tell the next passenger in this taxi that their ride is a gift from another and they can  54  their gratitude in whatever way.” The man turned toward me, tears in his eyes, and said, “Sir, I have a better  55 . You give that $20 to a  56  person around here and I’ll treat the next passenger with a  57  ride myself.”     Wow. This man was  58  10 minutes ago. I got out and walked around trying to find someone who needed help  59  heading to my destination. It was an honor meeting that driver and  60  the lesson of how everyone is capable of giving. 41.A. gotten off        B. put down                    C. called up                    D. picked up 42.A question          B. time                  C. problem                    D. cost 43.A. friend           B. stranger                     C. driver                      D. customer 44.A.died out          B. appeared              C. died down                   D. died off 45.A.happiest          B. poorest                      C. richest                      D. strongest 46.A. kindness         B. chances               C. suggestions                  D. money 47.A.mind            B. stop                  C. allow                       D. enjoy 48.A.collecting         B. giving                C. receiving            D. existing 49.A.practise          B. explain               C. watch                      D. consider 50.A. printed          B. recorded              C. paid                       D. examined 51.A.adventure         B. information                  C. language                    D. feeling 52.A.refuse            B. raise                  C. keep                        D. spend 53.A.direction         B. power                C. weight                      D. size 54.A.share            B. earn                        C. forget                       D. miss 55.A.gift              B. idea                  C. opinion                     D. ride 56.A.homeless          B. native                       C. nice                  D. brave 57.A.long             B. comfortable                  C. free                        D. safe 58.A.bored            B. tired                        C. rude                        D. angry 59.A.after             B. before                      C. when                 D. as 60.A.learning          B. preparing                    C. finishing                    D. providing