题目

和数轴上的点成一一对应关系的是                                   （     ） A.整数           B.有理数          C.实数        D.无理数 答案：C下面是Learning English杂志社发给全国中学生的一封电子邮件。假如你叫李华，你对该邮件中的问题很感兴趣，请你给该杂志社的编辑回一封电子邮件，参与此次活动。Dear students,There must be some rules in your family, right? How do you like them? What's the best rule and what's the worst rule? Please e-mail us and share your thoughts with our readers.Learning EnglishDear students,There must be some rules in your family, right? How do you like them? What's the best rule and what's the worst rule? Please e-mail us and share your thoughts with our readers.Learning English要求：词数90左右，电子邮件的格式和开头已给出，但不计入总词数。Dear Editor,There are many rules in my family, some good and some bad.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,Li Hua