狭义的民族是指在一定的历史发展阶段所形成的具有共同语言、共同地域、共同经济生活以及共 发布时间：2017-07-10 13:29 │ 来源：www.tikuol.com 题型：判断题 问题： 狭义的民族是指在一定的历史发展阶段所形成的具有共同语言、共同地域、共同经济生活以及共同文化的稳定的人们共同体。
题型：判断题 完形填空。 Many people use email to communicate with each other. If you can surf the Internet, it is a great 1 to sendmessages easily, quickly and as often as you like. No 2 is it necessary to find a pen or paper, not to 3 an envelope or stamp. Are we missing anything by not writing paper letters to people? Must you take the 4 of writing them if youwant to receive such letters? Most people would probably answer, "No, it is a waste of paper 5 , and this is a much better system." It is hard to be against such a viewpoint. However, I would like to try. I believe that the kinds of letters people 6 to write were probably more 7 than billions of emails sent today. Of course, when it 8 to sending quick messages, email is the best. If 9 is important, email is particularly useful. 10 , if you want really to touch someone, a letter is more personal. 11 letters are the mostpersonal. If you can type fast, you can put a lot into a letter, but it lacks (缺少) the special sense that comes from seeing the handwriting. As long as it is understandable, it doesn't matter how tidy it is. When someone sitsdown and just writes to you, you will 12 that when you are reading it. Though I'm a teenager, I admit that I feel too 13 to receive a letter in the mail. I love seeing my name written by hand on 14 . You make yourself a cup of coffee, sit down in a comfortable place, open your 15 ,and enjoy everything that the person puts into those words just for you. What a gift! ( ) 1．A．chance ( ) 2．A．longer ( ) 3．A．say ( ) 4．A．question ( ) 5．A．anyway ( ) 6．A．needed ( ) 7．A．important ( ) 8．A．runs ( ) 9．A．money ( ) 10．A．However ( ) 11．A．Long ( ) 12．A．feel ( ) 13．A．excited ( ) 14．A．a letter ( ) 15．A．mouth B．way B．much B．speak B．trouble B．too B．used B．useful B．leads B．meaning B．So B．Typed B．love B．disappointed B．a list B．letter C．fun C．less C．talk C．pleasure C．simply C．got C．helpful C．comes C．feeling C．Therefore C．Handwritten C．want C．puzzled C．a paper C．book D．time D．important D．mention D．problem D．just D．agreed D．meaningful D．arrives D．time D．But D．Short D．like D．surprised D．an envelope D．magazine 查看答案
题型：判断题 a4+4分解因式的结果是（ ）A．（a2+2a-2）（a2-2a+2）B．（a2+2a-2）（a2-2a-2）C．（a2+2a+2）（a2-2a-2）D．（a2+2a+2）（a2-2a+2） 查看答案
题型：判断题 在25℃，101Kpa下由HCHO(g)、H2和CH4组成的混合气体共6.72g，其相对氢气的密度为14，将该气体与足量的氧气充分反应后的产物（水为气态）通过足量的Na2O2粉末，使Na2O2粉末增重的质量为[ ]A．等于6.72g B．大于6.72g C．小于6.72gD．无法计算 查看答案