题目

1克氯气含有n个氯原子，则1mol Cl2的分子个数可表示为        A．71n               B． (1/71)n          C．35.5n      D．(1/35.5).n  答案：C Every great achievement has been the result of years of dreaming. Even in early times, people could realize the of dreams. If a person has a dream and works hard, he or she will find a way bring it into success.Children do not have knowledge. However, they are natural dreamers. We should not them. With their rich imagination, they will with fantastic dreams. History is of examples. Many great men were dreamers when they were children. One such dreamer was Thomas Edison. He used to ostracized(排斥) when he was in primary school, but his achievements were greater than in his time.Teenagers and young people should also be to dream. They had big dreams and their dreams their lives and even the world. Steve Jobs and Bill Gates are the good examples. They developed technology and brought great progress to humans besides making money for .Older people should believe that it is never late to dream. Colonel Saunders KFC at the age of 67. Everyone has a chance to make dreams .【1】A.important B. importance C. most important【2】A.to B. of C. for【3】A.many B. a lot C. much【4】A.make fun B. laugh at C. look down【5】A.come up B. catch up C. get on【6】A.full B. filled C. fill【7】A.being B. be C. been【8】A.else everyone's B. everyone else's C. everyone else【9】A.encouraged B. encouragin C. encourage【10】A.change B. changed C. to change【11】A.had B. have to C. have【12】A.them B. themselves C. theirs【13】A.so B. very C. too【14】A.set up B. set out C. put up【15】A.come true B. achieve C. realize