21. Barges which carrier most of the heavy freight on rivers and canals are usually propelled by towing. 答案:A
测试点:词性。
分析:carrier是名词,而此处需要谓语动词。应为carries。
解题要点:名词后缀-er,-or,-tion,-sion等形式出现在TOEFL改错题中,应引起特别注意。
22. Although afflicted by serious eyesight problems, Alicia Alonso was one the principal stars of the American Ballet Theater and later formed her own dance company.
答案:C
测试点:习语。
分析:One of the+复数名词/名词词级是固定说法,此处缺of.
23. The ritual combat of animals are triggered by precise signals. 答案:B
测试点:主谓数的一致。
分析:主语是单数的combat,系动词要用心
解题要点:介词短语of animals是名词combat的定语,这类以of引接的定语后置结构要特别注意主谓的数是否一致。
24. It is more difficult to write simply, directly, and effective than to employ flowery but vague expressions that only obscure one’s meaning.
答案:B
测试点:并列结构/词性。
分析:and的前后部分应同词性、同性质,此处应用副词effectively与and前的simply和directly并列,不用形容词effective。
25. Different species of octopuses may measure anywhere from two inches to over thirty feet in long. 答案:D
测试点:词性
分析:表示“在长度方面”固定的说法是in length,不用long。从词性考虑,介词诅后要加名词(1ength),不能加形容词(1ong)。
解题要点;TOEFL考题中表示长(1ong,length),高(high,height),深(deep,depth)等词的名词及其形容词形式常常混淆。
26. According to some theories derived from psychoanalysis, life is supposedly easier and mo re pleasant when inhibitions overcoming.
答案:D
测试点:词形。
分析:inhibitions前有连接词when,说明其后应为主谓完整的从句。overcoming不是谓语动词的形式,应为are overcome。
27. When rainbows appear, they are always in the part of the sky opposite directly the Sun. 答案:D
测试点:词序。
分析:介词和它的宾语之间不要加入副词。此处副词directly应在介词opposite之前。
28. Benjamin Franklin drew a political cartoon that is credited raising 10,000 volunteers for the American Revolutionary War.
答案:C
测试点:习语。
分析:Be credited with是固定短语,表示“被认为取得某种成就”。
29. The begins of the modern chemistry laboratory go back to the workrooms of medieval lchemists.
答案:A
测试点:词性。
分析:此处要求名词作主语,而begins则是动词形式。应为beginnings.
30. In many pieces of music there is a dominant theme on which the restful of the composition is centered.
答案:C
测试点:习语/词性。
分析:The rest of是固定短语。从词性的角度来分析,冠词the后面应接名词。
31. Luminescence refers to the emission of light by means another than heat. 答案:C
测试点:other和another的用法。
分析:遇有划线的another或other要加以注意,这两个词常被相互错用。此处应为other。Other than是固定说法,表示“除了,不同于”。
32.In a representative democracy, the people election delegates to an assembly. 答案:C 测试点:词性。
分析:此处需一动词作谓语,而election是名词。解题要点;参见本套考题的第(21)题。
33.George Washington Carver found hundred of uses for the peanut, the sweet potato, and the soybean and thus stimulated the cultivation of these crops.
答案:A
测试点:习语。
分析:表示不确定数目的短语,如hundreds of,thousands of,millions of等,均用复数。
34. A citadel, a fortress designed for the defense of a city, usually standed on top of a hill. 答案:D
测试点:不规则动词的词形变化。
分析:这类考题数量虽不多,但考的是最基本的知识,不应做错。stand的过去式是stood,standed是个错字。解题要点;stand-stood·stood及begin-began-begun等不规则动词变化形式要记牢。
35. Conservative philosophers argue that the very structure of society is threatening by civil disobedience, while humanists stress the primacy of the individual conscience.
答案:B
测试点:被动语态。
分析:系动词 (be)和介词by同时出现是被动语态的信号,它们之间的动词要用过去分词。此处threatening应为threatened.
36. Since 1971 the regional corporations set up in Alaska by Congress managing everything from fishing to banking. 答案:C
测试点:词形。
分析:此处需要谓语动词形式have managed。句中set up为过去分词短语,修饰前面的名词主语corporations。另外注意 (D)banking为名词,意为“银行业”。
37. A rocket burns propellant rapidly and most rockets carry a supply that last just a few seconds.
答案:D
测试点:主谓数的一致。
分析:that为从句主语,后接动词作其谓语。而that代指单数的a supply故其谓语也应用单数形式的lasts。
38. Textile art is known for both its tactile and vision qualities. 答案:C
测试点:词性/并列结构。
分析:连词and要求它两边是同词性、同性质的成份。此处and一边是形容词tactile,另一边应当也是形容词visional,不用名词vision。
39. The metal aluminum has been first isolated early in the nineteenth century. 答案:D
测试点:时态。
分析:若句中有表示具体时间的状语,如in the nineteenth century等,则不能用现在完成时,而要用一般过去时。此处has been为was。
40. Gulls can often be see swooping over large bodies of water. 答案:B
测试点:词形/被动语态。
分析:系动词be后不能加动词原形,此处应以be+过去分词表示被动。see应为seen。
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