辉铜矿的主要成分是Cu2S，Cu2S中Cu元素的质量分数是______；现有含C 发布时间：2017-06-30 12:14 │ 来源：www.tikuol.com 题型：填空题 问题： 辉铜矿的主要成分是Cu2S，Cu2S中Cu元素的质量分数是______；现有含Cu2S 35%的辉铜矿石5t．最多能够冶炼出金属铜______t．
题型：填空题 在下面横线处各补上一句话。要求：语意连贯，句式一致，形成完整的排比句。 人要懂得尊重自己，尊重自己所以不苟且，不苟且所以有品位；人要懂得尊重别人，__________，__________；人要懂得尊重自然，__________，__________。 查看答案
题型：填空题 完形填空。 One day, a young man was cleaning out his late grandfather's belongings when he came across a bright red envelope. Written on the 1 were the words, "To my grandson." 2 it was his grandfather's handwriting, the boy opened the envelope. A letter inside read: Dear Ronny, Years ago, you 3 to me for help. You said, "Grandpa, how is it that you've 4 so much in your life? You're still full of 5 , but I'm already tired of struggling. How can I get that same enthusiasm that you've got?" I didn't know what to say to you then. But knowing my days are 6 , I figure that I 7 you an answer.So here is what I believe. I think it has something to 8 with how a person looks at things. I call it "keeping your eyes wide open". First, realize that life is filled with surprises, but many are good ones. If you don't keep 9 for them, you'll miss half the excitement. Expect to be excited 10 , and you will be. When you meet up with 11 , welcome them. They'll leave you wiser, stronger, and more capable than you were the day before. When you make a mistake, be 12 for the things it taught you. Learn to use that lesson to help you reach your goals. It's also important to 13 exactly what you want. Then keep your mind focused on it, and be prepared to receive it. As you grow with the years, you'll be given bigger shoes to fill. So be ready for endings as well as challenging 14 . Sometimes we have to be brave enough to move from the familiar to the unfamiliar. Life isn't just reaching peaks. Part of it is moving from one 15 to the next. If you 16 too long in between, you might be tempted to 17 . So consider all the pathways ahead, and decide which ones to 18 . Then believe in yourself, get up, and get going. Most important of all, never give up on yourself. The person that ends up a winner is the one who resolves(决定) to 19 . Give life everything you've got, and life will give its best 20 to you. ( )1. A. paper ( )2. A. Realizing ( )3. A. came ( )4. A. finished ( )5. A. power ( )6. A. numbered ( )7. A. have ( )8. A. do ( )9. A. finding ( )10. A. all the time ( )11. A. challenges ( )12. A. sad ( )13. A. achieve ( )14. A. beginnings ( )15. A. side ( )16. A. walk ( )17. A. quit ( )18. A. go ( )19. A. lose ( )20. A. back B. front B. Recognizing B. went B. made B. magic B. counted B. owe B. deal B. applying B. once in a while B. troubles B. grateful B. receive B. difficulties B. road B. rest B. sleep B. follow B. defeat B. out C. back C. Recommending C. asked C. contributed C. energy C. accounted C. make C. make C. watching C. at once C. failures C. eager C. decide C. lives C. way C. climb C. return C. move C. win C. away D. cover D. Representing D. returned D. accomplished D. confidence D. finished D. get D. connect D. preparing D. right now D. successes D. excited D. attain D. shoes D. peak D. move D. continue D. get D. beat D. over 查看答案
题型：填空题 下列是《红楼梦》“金陵十二钗正册”中的三段判词，暗指《红楼梦》中三个女子的命运。请依次指出这三个女子是谁，并分别简述其身世与命运。①才自清明志自高，生与末世运偏消。清明涕送江边望，千里东风一梦遥。②勘破三春景不长，缁衣顿改昔年妆。可怜绣户侯门女，独卧青灯古佛旁。③子系中山狼，得志便猖狂。金闺花柳质，一载赴黄梁。 查看答案
题型：填空题 雷尼替丁不干扰华法林、地西泮、茶碱在肝中代谢是因为A．与西咪替丁相同，与肝细胞色素P450亲合力弱小B．与肝脏细胞色素P450的亲合力较西咪替丁小C．与西咪替丁不同，与肝脏细胞色素P450的亲合力较西米替丁小D．与西咪替丁相同，与肝脏细胞色素P450的亲合力强大E．与肝脏细胞色素P450的亲合力较西咪替丁大 查看答案