题目内容：
Curiosity is not only a possible motivation, it is also a great help in your learning languages. Remember that a language is not 11 a grammatical system. It is the 12 of a certain culture of different cultures. It is no good 13 strings of words and lists of grammatical rules 14 you know as much as possible about the background of the language, so that you can understand the ideas conveyed and the references made, as well as the inferences which can 15 the information clearly given. So learn as much as you can about the different cultures which 16 English-watch television programs, listen to the radio, try to obtain 17 and magazines written by native speakers, look at advertisements, and, above all, read-not textbooks, 18 novels, poems and plays. They will show you how a language is 19 used. The English language is a living form. of expression which derives much of its 20 from the context, and much of its effect from a whole network of extra-linguistic knowledge.11．A. just B. even C. so D. that
参考答案：