专四完型填空及答案《完美》 - 图文

2000年

一．The difference between a liquid and a gas is obvious (26) the conditions of temperature and pressure commonly found at the surface 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 \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 silly. They are fluids.

The( 34 )similarly of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.(35) A closed container partially filled with a liquid is heated. The liquid expands or (36) becomes less dense; some of it evaporates. (37), the vapor above the liquid surface becomes dense r as the evaporated molecules are added to it. The combination of temperature and d pressure (38) the densities become equal is (39) 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

27. A. fills B. be filled 28. A. intends 29. A. however

30． A. in the event of to

32. A. made up of

33. A. apply B 34. A. elementary

35. A. Suppose

36. A. in a word B. in the meantime C. in other words D. in that c

D.

D.

D.

A. having described B.

D.

37. A. Similarly 38. A. on that 39. A. known 40. A. classified Distinguished

短文大意：这篇文章介绍了气体与液体的特性及相关理论。 26．答案：B

【试题分析】本题考查对固定搭配的掌握。

【详细解答】under与condition搭配，表示“在……条件或状况下”；on与 condition搭配，表示“在……条件下”；in与condition构成习惯短语，表示“身体状况良好”，而be out of condition”则表示“身体状况不好”。 这里是说“在地球表面通常的温度和压强条件下……”，故选项B为正确答案。 27．答案：A

【试题分析】本题为语法题，考查对句子结构的理解。 【详细解答】由于所填词前有and这一并列连词，这里缺少一个谓语与前面的“can be”并列。谓语动词fill意思是“使……充满”，具有使动意义，其后直接跟宾语，故选项A是正确答案。 28．答案：B

【试题分析】本题为动词词义辨析题。

【详细解答】 intend意为“打算，意图”，主语通常是人；tend意为“有……倾向”，后接不定式，主语可以是人也可以是物；incline意为“使(某人)倾向于，使(某人)有意思(做某事)”，常用于被动语态be inclined to；contend意为“争夺；争辩”。这里是说“但（气体）往往会扩散到任何可能的空间”，故选项B为正确答案。29．答案：D 【试题分析】本题为语法题，考查连词的用法。

【详细解答】however表转折意为“然而”；nevertheless也表转折，

意为“然而”；so表结果，但常放于句首; therefore表结果，意为“因此，所以”。这里是说气体容易扩散，所以必须保存在密闭的容器里。因此此处需要一个表结果关系的连词，故选项D为正确答案。 30．答案：B

【试题分析】本题考查对固定搭配的掌握。

【详细解答】in the event of表示“如果发生……，万一……”；in the case of表示“在……的情况下，就……而言”; with a view of或者with a view to，意思是“以……为目的；为……起见”；with reference to意思是“关于”。根据上下文，这里是说“必须将气体存放在一个密封的容器里，如同一颗行星的大气一样。” 故选项B为正确答案。 31．答案：C

【试题分析】本题为语法题，考查对非谓语动词的掌握。 【详细解答】本句中的describe的逻辑主语为theories，故应用现在分词。同时，describe这一动作只说明一种事实，并不与其他动词作时间上的先后比较，不必用完成式。故选项C为正确答案。 32．答案：A

【试题分析】本题为短语词义与用法辨析题。

【详细解答】consist of一般用主动式; be made from一般指某种产品由某种材料制成(但从外表上看不出原材料); be made up of表示“由……组成”。根据上下文理解，此处要求填一“由……组成”的短语，故选项C为正确答案。 33．答案：C