Of all systens of symols, language is the most highly developed. It has been ponted out that human beings, by agreement, can make anything stand for anything. Human beings have agreed, in the course of centuries of mutual (相互的) depenncy, to let the vrious n0that they can produce with their lungs. throats, tongues, teeth, and lis systematically stand for certain happenings in their nervous system. We call that system of agreements language.There is no necessary connection between the symbol and that which it stands for. Just as social positions can be symbolized by feathers worn on the head, by gold on the watch chain, or by a thousand other things according to the culture we live in, so the fact of being hungry can be symbolized by 2 thousand dfferett noises according to the culture we live in.However obvious these facts may appear at first glance. they are actually not so obvious as they seem except when we take special pains to think about the subject. Symbols and the things they stand for are independent of each other, yet we all have a way of feeling as if and sometimes acting as if there were necessary connections. For example, there are people who feel that foreign languages are unreasonable by nature: foreigners have such funny names for things, and why can't they call things by their right names? This feeling exhibits itself most strongly in those English and American tourists who seem to believe that they can make the natives of any county understand English if they shout loud enough Like the lttle boy who is reported to have said:“Pigs are clled pigs because they are such dirty animals，”they feel that the symbol is inherently (内在地) connected in some way with the things symbolized.1.Language is a highly developed system of symbols because human beings.（）A. have made use of language for cenuriesB. use our nervous system to support languageC. have made various noises stand for any eventsD. can make anything stand for anyting by agrement2.What can we conclude fom Paragraph2? （）A. Different noises may mean dfferet things.B. Our culture determines what a symbol stands for.C. The language we use symboizes our social positions.D. Our social positions determine the way we are dessed.3.In Paragraph 3, the underlined words take special pains probably means（）.A. try very hardB. take our timeC. are very unhappyD. feel espeialy painful4.The example of the lite boy is used to show that.（）A. adults often learn from their youngB. “pig”is a dirty word because pigs are dirtyC. words are not connected with the things they stand forD. people sometimes have wrong idea about how language works5.What does the writer of this passage think of language? （）A. appreciativeB. depreciativeC. neutralD. unknown