第1卷(选择题，共70分)注意事项：1.答卷前,考生务必将自己的姓名和准考证号用黑色签字笔填写在试卷和答题卡指定位置。2.每小题选出答案后,用28铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。答在试卷上无效。3.考试结束时，考生将本试卷和答题卡一并交回。Part I Vocabulary and Structure(20 points)Directions:There are 20 incomplete sentences in this section.For each sentencethere are four choices marked A,B,C, and D.Choose the One answer that best completesthe sentence.Then mark the corresponding letter on the Answer Sheet with a singleline through the center.1.()means the property of having two levels of structures, such that unitsof the primary level are composed of elements of the secondary level and each ofthe two levels has its own principles of organization.A.CreativityB.DualityC.ArbitrarinessD.Displacement2.()distinguishes the linguistic competence of the speaker and the actualphenomena or data of linguistics as language and parole.A.ChomskyB.SaussureC.GilmanD.Brown3.()is the study of the characteristics of language varieties, the