21. Among the following words only“________ ” expresses the property of elevation. ( )

　　A. lust

　　B. criticize

　　C. knight

　　D. silly

　　22. Which of the following is NOT one of the main functions of context? (　　)

　　A. Elimination of ambiguity.

　　B. Indication for referents.

　　C. Understanding of cultural background.

　　D. Provision of clues for inferring word-meaning.

　　23. Which of the following is NOT a context clue? (　　)

　　A. Definition.

　　B. Example.

　　C. Synonymy.

　　D. Sentence structure.

　　24. The sentence “The ball was attractive” is ambiguous due to_______________. (　　)

　　A. grammatical structure

　　B. lexical context

　　C. homonymy

　　D. polysemy

　　25. Which of the following is one of the characteristics of idioms? (　　)

　　A. Semantic unity.

　　B. Lexical manipulation.

　　C. Phonetic unity.

　　D. Structural variation.

　　26. Which of the following is NOT one of the rhetoric characteristics of idioms in general?(　　)

　　A. Stylistic features.

　　B. Syntactical features.

　　C. Rhetorical features.

　　D. Occasional variations.

　　27. The idiom “bed of dust” is a ___________ as far as figures of speech are concerned. (　　)

　　A. simile

　　B. metaphor

　　C. metonymy

　　D. personification

　　28. Collins COBUILD English Language Dictionary is a(n) _____________ dictionary. (　　)

　　A. unabridged

　　B. desk

　　C. pocket

　　D. encyclopedic

　　29. When we choose a dictionary, we should not pay attention to whether it is _____________. (　　)

　　A. monolingual or bilingual

　　B. general or specialized

　　C. early or late

　　D. unabridged or abridged

　　30. Readers will usually find in a general dictionary the following areas of information of a word EXCEPT _______________ . (　　)

　　A. spelling

　　B. definition

　　C. pronunciation

　　D. difference with its synonyms