简答题Of the following words, ______ is an initialism. A. UN B. NATO C. BASIC D. UNESCO简答题( ) is NOT a pair of homophones. A、"Fair" (lovely) and "fair" (a regular gathering of people for barter and sale of goods) B、"Flea" (any of various small, wingless, bloodsucking insects) and "flee" (to escape) C、"Lead" (to guide) and "lead" (metal of a dull bluish-grey colour that melts easily) D、"compliment" (an expression of praise, admiration, or congratulation) and "complement" (something that completes, makes up a whole, or brings to perfection)简答题Of the following word-formation processes, ______ is the most productive.A.clippingB.blendingC.initialismD.derivation简答题The ambiguity in "Pass the port" is caused by ( ) . A、lexical items B、a grammatical structure C、homonymy D、polysemy简答题General officer; editorial article; gold medal" are often shortened as 'general, editorial, and gold' respectively. In these cases that there is a ( ) behind this sort of semantic change. A、foreign influence B、social cause C、linguistic cause D、psychological cause简答题In terms of oppositeness of meaning, ( ) is a pair of conversives. A、"employed" and "unemployed" B、"present" and "absent" C、"long" and "short" D、"above" and "below"简答题The word "accident" used to mean "an occurrence or an event"; now it means "an unplanned or chance event with unfortunate consequences". The word has undergone a sort of semantic change called ( ) . A、elevation B、degeneration C、extension D、restriction简答题The word ( ) is usually NOT used by British people. A、"tube" B、"pub" C、"railroad" D、"taxi"简答题Affixes can be grouped according to ( ) . A、their linguistic origins B、productivity C、ability to change the word –class D、all the above简答题The information about the word class of a word is part of its ______ meaning. A. lexical B. grammatical C. central D. derived