(单选题)1: The motivation that the learners have a sense of achievement as long as they learn if of vital importance may be termed _ motivation.A: instrumentalB: integrativeC: cognitiveD: none of them正确答案: (单选题)2: A minimal distinctive linguistic unit is a_.A: morphemeB: wordC: phonemeD: allophones正确答案: (单选题)3: 1.The term _ is the label given to the form of a language used by any group of speakers or used in a particular field.A: varietyB: register