【简答题】Human languages are known as natural languages.
【简答题】How many human languages are there in the world?
【判断题】Human languages are derived from the natural sounds around and are thus onomatopoeic in nature. [2.1.2]
【判断题】Human languages are qualitatively different from animal communication systems.
【简答题】So far as we can tell, all human languages are equally complete and perfect as instruments of communication: that is, every language appears to be well equipped as any other 【B1】______ to say the thin...