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| 文章出处：学生大考试站 发布时间：2005-10-12 |
nbsp;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 &nb
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