简答题A digital recorder for voice-recording is always needed when we are listening to a lecture.简答题The reliable sources we may use in our research are usually（ ）? A、articles in journals B、newspapers C、dictionaries D、stories E、textbooks简答题Listening to lectures is a good access to essential knowledge in a particular discipline.简答题Terms mean the words or expressions only used in technology.简答题Subject-specific words refer to the words which are closely related to a subject.