【摘要】 那些看似不起波澜的日复一日，在某一天会让你看到坚持的意义。考必过小编为大家整理了关于“2021年6月大学英语六级重要阅读练习(5 16)”的信息，下面我们就一起来看下“2021年6月大学英语六级重要阅读练习(5 16)”的内容吧!
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 11 available; it must therefore be kept in a closed container or held by a gravitational field, as in the 12 of a planet's atmosphere. The distinction was a 13 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 14 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 15 They are both forms of matter that have no 16 structure, and they both flow readily.
The fundamental similarity of liquids and gases becomes clearly apparent when the temperature and pressure are 17 somewhat. Suppose a closed container 18 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 19 to it. The combination of temperature and pressure at which the densities become 20 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
0. common
11. I 12. B 13. C 14. D 15. O 16. K 17. N 18. F 19. A 20. E
以上就是考必过小编为大家整理的关于“2021年6月大学英语六级重要阅读练习(5.16)”的相关信息，学习英语六级贵在坚持，成在坚持。想了解更多考试最新资讯可以关注考必过。