11 available; it must therefore be kept in a closed container or held by a gravitational field, as in the 12 of a planets 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
II. I 12. B 13. C 14. D 15. O 16. K 17. N 18. F 19. A 20. E
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(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book2 Unit 6《design》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book6 Unit 16《stories》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book4 Unit 12《culture shock》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book6 Unit 17《laughter》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book3 Unit 7《the sea》
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:4(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book4 Unit 10《money》
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book5 Unit 15《learning》
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book1 Unit 1《lifestyles》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book6 Unit 18《beauty》(含解析)
2017届河南省三门峡市卢氏县高考英语一轮完形填空精编:10(含解析)
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:8(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book2 Unit 5《rhythm》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book3 Unit 9《wheels》(含解析)
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:2(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book5 Unit 13《people》(含解析)
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:6(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book4 Unit 11《the media》
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book1 Unit 3《celebration》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book3 Unit 9《wheels》
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:10(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book7 Unit 21《human biology》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book1 Unit 3《celebration》
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book6 Unit 16《stories》
(豫皖京闽粤通用)2017届高考英语北师大版一轮自主复习学案:book2 Unit 6《design》
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book5 Unit 14《careers》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book2 Unit 4《cyberspace》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book3 Unit 7《the sea》(含解析)
(豫皖京闽粤通用)2017届高考英语北师大版一轮复习配套练习:book5 Unit 15《learning》(含解析)
2017届河南省信阳市罗山县高考英语阅读理解一轮精编:1(含解析)