题目

电动汽车以锂电池提供动力，锂电池技术已经成为汽车研究的前沿科技某锂电池的电池反应为：xLi+Li3-xNiCoMnO6Li3NiCoMnO6 ， 下列说法正确的是( ) A . 该电池的充、放电过程互为可逆反应 B . 放电时，电池的负极反应为Li-e-=Li+ C . 放电过程中，Li+向电池的负极移动 D . 该电池可以采用醋酸、乙醇等作为电解质溶液When I was eleven years old, God gave me a gift of happiness. One day, on my way homefrom school, a truck ran over me and cut off my . As I lay there bleeding, I realized that I might have to live the rest of my life legs. How depressing （令人沮丧的）! then I realized that depression won’t get my legs back. So I decided not to my life feeling depressed. When my parents arrived at the , they were shocked and sad. I told them, “I’ve already the fact. Now you also have to get used to this.” Ever since then, I often see my friends getting about little things: their bus comes late; they get a bad grade on a test. But I just life. I was lucky to realize that it is a waste of energy to focus on what you have , and that the key to happiness is to take pleasure in what you have. Sounds simple, doesn’t it ? So are many people unhappy? People often think happiness is based on what you . “My whole life would improve if I had a new car.” But when you get the and what happens? For a whole week you are walking on air. Then you go right back to being .Happiness is not a happening; it’s a state of .You can have whatever there is in the world and still be uncomfortable. Or you can have relatively and feel full of joy. Happiness comes from mastering the art of appreciating and consciously taking pleasure in what you already have.1.A. arms B. legs C. feet D. fingers2.A. without B. by C. on D. with3.A. So B. Or C. But D. Once4.A. spare B. devote C. influence D. waste5.A. hotel B. hospital C. station D. school6.A. believed B. accepted C. refused D. received7.A. worried B. guilty C. excited D. curious8.A. hate B. enjoy C. save D. dislike9.A. struggled B. supported C. lost D. completed10.A. how B. why C. when D. whether11.A. achieve B. promise C. donate D. admire12.A. car B. life C. job D. grade13.A. wise B. silly C. friendly D. unhappy14.A. pain B. appearance C. anger D. mind15.A. much B. many C. little D. all