已知地球运行的轨道是椭圆，太阳在这个椭圆的一个焦点上，这个椭圆的长半轴长约为1. 发布时间：2017-04-28 11:25 │ 来源：www.tikuol.com 题型：填空题 问题： 已知地球运行的轨道是椭圆，太阳在这个椭圆的一个焦点上，这个椭圆的长半轴长约为1.5×108km，半焦距约为3×106km，则地球到太阳的最大距离是______km．
题型：填空题 完形填空 Not long ago I wasn't doing very well in exams and I was full of disappointment and __1__ thinking. While on the Internet, I met many new friends, but one in particular __2__. His nickname is Colorful Day and we __3__ on the Web. He told me: he lost his __4__ at age 15, and felt the whole world had closed its door to him. He was __5__ so fast that I couldn't believe he was blind! But he continued to __16__: Five years ago, I realized it was time to change my life. I had read about Helen Keller and understood her life and __7__. So I developed a website about her life __8__ mine called Three Days to See. I visited his website which was well produced and vividly__9__. I asked, "How did you __10__ to build such a website?" He said, "Owing to the new technology, I can use software specially __11__ for the blind. __12__ I point the cursor(光标), it will just read it out to me. We can do far more things and __13__ more information than we could before." I then asked, "Didn't you have great difficulty with it?" He hesitated and then began his __24__ with a smiling face, "Yes, but I have faith in myself to __15__ my colorful day. And modern technology gives me this __16__ to do it." His __17__ attitude towards life made me believe that our destiny offers not the cup of despair, __18__ the chalice (大杯) of opportunity. I returned to my lessons, and this time with a smile on my face and with __19__ of a colorful future. The Internet, which opened to me to __20__ different lives and cultures, has a charm you couldn't find in another wise nonvirtual world. ( )1. A. positive ( )2. A. turned out ( )3. A. argued ( )4. A. eyesight ( )5. A. speaking ( )6. A. follow ( )7. A. friendship ( )8. A. as well as ( )9. A. offered ( )10. A. try ( )11. A. designed ( )12. A. Whether ( )13. A. send ( )14. A. webpage ( )15. A. create ( )16. A. moment ( )17. A. hopeful ( )18. A. but ( )19. A. eagerness ( )20. A. touch B. active B. stood out B. interviewed B. hearing B. saying B. write B. marriage B. such as B. presented B. come B. distinguished B. However B. access B. speech B. produce B. privilege B. disappointed B. and B. expectations B. feel C. negative C. came out C. told C. courage C. typing C. read C. happiness C. like C. delivered C. work C. planned C. Whatever C. communicate C. words C. recognize C. opportunity C. pleasant C. so C. richness C. experience D. instructive D. looked out D. chatted D. confident D. spelling D. copy D. hardships D. as D. found D. manage D. imagined D. Wherever D. exchange D. opinions D. organize D. occasion D. optimistic D. then D. nervousness D. suffer 查看答案
题型：填空题 唐代陆贽在谈到租庸调时说：“有田则有租，有家则有调，有身则有庸。”这说明租庸调制______ ①基本特点是以丁计税 ②实物租税和劳役相结合 ③是一种商品经济不发达状况下的赋税方式 ④反映了国家对农民人身的严格控制A．①②③④都正确 B．①②③正确，④错误C．②④正确，①③错误 D．①②正确，③④错误 查看答案