考研

题干：1.[单选题]The speaker who does not have specific words in his working vocabulary may be unable to explain or describe in a way that can be understood by his listeners.这句话中，who does not have specific words in his working vocabulary用来修饰限定________

选项：A. vocabulary B. speaker C. 整句话 D. be unable to

题号：1.【答案】B。解析：who does not have specific words in his working vocabulary是定语从句，修饰限定前面的名词speaker。故本题答案为B。