【摘要】 关注英语专业四级考试历年真题可以更好地掌握考试出题动向，明确知识点的考查方式。考必过为大家精心整理了2000英语专四完形填空真题，希望能够帮助即将参加英语专业四级考试的考生们顺利达成考试目标。2000英语专四完形填空真题的详细内容如下：
Part ⅣCLOZE [15 MIN.] Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on your answer sheet. The difference between a liquid and a gas is obvious ( 26 ) the conditions of temperature and pressure commonly found at the sur face of the Earth. A liquid can be kept in an open container and ( 27 ) it to the level of a free surface. A gas forms no free surface but ( 28 ) to diffuse throughout the space available; it must ( 29 ) be kept in a closed container, as ( 30 )a planet’s atmosphere. The distinction was a prominent feature of early theories ( 31 )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 ( 32 ) different kinds o f molecules(分子). The theories now prevailing ( 33 ) a quit e 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 ea sily. They are fluids. The ( 34 ) similarly of liquids and gases becomes clear ly apparent when the temperature and pressure are raised somewhat.( 35 ) a closed container partially filled with a liquid is heated. The li quid expands or ( 36 ), becomes less dense; some of it evapor ates.( 37 ), the vapor above the liquid surface becomes dense r as the evaporated molecules are added to it. The combination of temperature an d pressure ( 38 ) the densities become equal is ( 3 9 ) the critical point. Above the critical point the liquid and the gas can no longer be ( 40 ); there is a single, undifferentiated fluid phase of uniform density. 26. A. in B. on C. under D. beyond 27. A. fills B. be filled C. filling D. to fill 28. A. intends B. tends C. inclines D. contends 29. A. however B. nevertheless C. so D. therefore 30. A. in the event of B. in the case of C. with a view to D. with reference to 31. A. having described B. described C. describing D. to have described 32. A. made up of B. consisted of C. constituted of D. made from 33. A. apply B. adapt C. take D. conduct 34. A. elementary B. crucial C. rudimentary D. fundamental 35. A. Suppose B. To suppose C. Being supposed D. Supposed 36. A. in a word B. in the meantime C. in other words D. in that case 37. A. Similarly B. In contrast C. Furthermore D. Instead 38. A. on that B. on which C. at that D. at which 39. A. known B. defined C. called D. referred to 40. A. classified B. recognized C. categorized D. distinguished
以上就是2000英语专四完形填空真题的详细内容，生命需要保持一种激情，希望能够帮助即将参加英语专业四级考试的考生们顺利达成考试目标，加油。更多资讯关注考必过网站，最新消息小编会第一时间发布！