首页
登录
职称英语
The difference between a liquid and a gas is obvious【1】the conditions of tem
The difference between a liquid and a gas is obvious【1】the conditions of tem
游客
2025-04-18
9
管理
问题
The difference between a liquid and a gas is obvious【1】the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and【2】it to the level of a free surface. A gas forms no free surface but【3】to diffuse throughout the space available; it must【4】be kept in a closed container, as【5】a planet’s atmosphere. The distinction was a prominent feature of early theories【6】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 held that the two phases are【7】different kinds of molecules(分子). The theories now prevailing【8】a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter that have no permanent structure, and they both flow easily. They are fluids.
The【9】similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.【10】a closed container partially filled with a liquid is heated. The liquid expands, or【11】, becomes less dense; some of it evaporates.【12】, the vapor above the liquid surface becomes denser as the evaporated molecules are added to it. The combination of temperature and pressure【13】the densities become equal is【14】the critical point. Above the critical point the liquid and the gas can no longer be【15】; there is a single, undifferentiated fluid phase of uniform density. [br] 【6】
选项
A、having described
B、described
C、describing
D、to have described
答案
C
解析
现在分词短语作定语修饰“theories”,且不存在逻辑上的被动关系和时间先后关系,因此要选describing,即答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/4043011.html
相关试题推荐
Badtravelingconditionshadseriously______theirprogresstotheirdestination
Theworseningfinancialsituationmadeitobviousthataneconomicdepressionwa
Watchababybetweensixandninemonthsold,andyouwillobservethebasic
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
Itisnotlongsinceconditionsinthemineswereworsethantheyarenow.T
随机试题
EachtimeIhearsomeonesay,"Dothemath,"Igritmyteeth.Thephraserei
【说明】根据下列要求完成一封咨询信。【内容】1.你是一位家庭主妇辛迪,想要购买圣诞节的装饰和礼物。2.被一家店的广告吸引,想向店主咨询装饰礼物的具体情况。
TrustMe,IAmaRobotRobotsafety:asrobotsmov
Ⅰ型反滤的反滤层位于被保护土的()。A.下部 B.上部 C.中部 D.底部
患者,男性,50岁。右上腹胀痛伴低热2月余,2小时前突感右上腹剧痛伴头晕。查体:
从业人员投资股票可以挪用公款和客户资金买卖股票。()
罗伊适应模式理论认为健康是指A:个体成为一个完整和全面的人的状态和过程 B:个
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
下列关于胸腔积液与气胸患者体征的对比,错误的是( )。A.患侧胸廓均可呈饱满
右手打乒乓球的技能也将促进左手技能的掌握,这种现象在心理学上称为()
最新回复
(
0
)