• <em id="ete3y"></em>
    <div id="ete3y"></div>
  • <em id="ete3y"></em>
    1. <em id="ete3y"><label id="ete3y"><small id="ete3y"></small></label></em>

      新东方国际游学

      新东方网>长春新东方学校>国内考试>六级>正文

      2019年6月大学英语六级阅读训练:17

      2019-04-10 09:37

      来源:新东方在线

      作者:

        The difference between a liquid and a gas is obvious under the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fill it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the__1__available; it must therefore be kept in a closed container or held by a gravitational field, as in the__2__of a planet's atmosphere. The distinction was a __3__feature of early theories describing the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be "dissolved" in a vapor without losing its identity, and another theory__4 __that the two phases are made up of different kinds of molecules. The theories now prevailing take a quite different approach by emphasizing what liquids and gases have in __5 __They are both forms of matter that have no __6 __structure, and they both flow readily.

        The fundamental similarity of liquids and gases becomes clearly apparent when the temperature and pressure are __7__somewhat. Suppose a closed container __8__filled with a liquid is heated. The liquid expands, or in other words becomes less dense; some of it evaporates. In contrast, the vapor above the liquid surface becomes denser as the evaporated molecules are __9__to it. The combination of temperature and pressure at which the densities become __10__is called the critical point.

        A. added B. case C. prominent D. held

        E. equal F. partially G. example H. previous

        I. space J, lifted K. permanent L. particularly

        M. extended N. raised O. common

        答?#31119;?/strong>

        I. I 2. B 3. C 4. D 5. O 6. K 7. N 8. F 9. A 10. E

             以上就是本文的全部内容,更多精?#26159;?#38543;时关注新东方长春学校官网。


      相关推荐

      六级资讯

      四六级课程导航

      六级课程表

      六级内容咨询

      新东方长春学校官方微信:新东方长春学校 (微信号:ccxdfcn

      最新考试资讯、考试政策解读、真题解析,请扫一扫二维码,关注我们的官方微信!

      相关推荐

      • 中学辅导
      • 大学辅导
      • 出国辅导
      • 热门活动

      版权及免责声明

      凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所?#26657;?#20219;何?#25945;濉?#32593;站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的?#25945;濉?#32593;?#33606;?#22312;下载使用?#21271;?#39035;注明"稿件来源:新东方",违者本网将依法追究法律责任。

      本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他?#25945;濉?#32593;站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅?#28304;?#25913;为"稿件来源:新东方",本网将依法追究法律责任。

      如本网转载稿涉?#38797;?#26435;等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。

      七乐彩胆拖计算器
    2. <em id="ete3y"></em>
      <div id="ete3y"></div>
    3. <em id="ete3y"></em>
      1. <em id="ete3y"><label id="ete3y"><small id="ete3y"></small></label></em>

      2. <em id="ete3y"></em>
        <div id="ete3y"></div>
      3. <em id="ete3y"></em>
        1. <em id="ete3y"><label id="ete3y"><small id="ete3y"></small></label></em>