【答案解析】One opinion in Linguistics is called the time-space theory. It concentrates on the rheology phenomenon of language by studying the time and space difference, because rheology of language appears as a result of the difference on the intensity and nature as time and space extending. It seeks to describe and reveal the basic conception, inherent relation and theology mechanism of the language in an objective and accurate way, and chase the realistic knowledge about language. It observes the principles and roles of rheology, not to prove that language carries on rheology according to a certain principle and rule, but to have a better understand of the truth of language.