阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。 　　Until a relatively short time ago traveling abroad was limited to rich tourists and wealthy businesspeople．Flying abroad was not common for the average person．In time however plane travel became safer more convenient and less expensive．As a result people of different backgrounds now fly to distant places for pleasure and businesspeople fly to one country for a breakfast or lunch conference and then fly to another country for a dinner meeting． 　　With the world becoming smaller many young adults make the decision to study in foreign universities．It is an exciting challenging experience to live in a foreign country．Anyone who can study abroad is fortunate; but of course it is not easy to change from one culture to another．One faces many difficulties． 　　The student who studies in a foreign country leaves behind a familiar loving comfortable environment．Back home he has his family friends and acquaintances．He knows the language politics money food social customs and so forth．He knows all the unclear aspects of his native culture such as body language and bargaining practices etc．in short he knows “the system” in his native country．Then one day he leaves all this behind and suddenly finds himself in a place where everyone and everything is strange perhaps even confusing．All this strangeness is a major surprise to a person's self-confidence．This sudden change often leads to a reaction called culture shock． 　　Foreigners experience different degrees of culture shock．The symptoms range from being ill at ease to being seriously depressed．Feeling homesick unhappy and very sensitive are other signs of culture shock．It is easy to understand that the endless frustrations of the early days in a new country would produce dissatisfaction and perhaps even hostility(敌意)．People are always at ease in a familiar environment．A mature realistic person experiences mild temporary symptoms; the insecure newcomer suffers more seriously from a culture shock． 　　During the unavoidable period of adjustment the international student tends to complain about everything in the new environment．In fact the student is likely to exaggerate(夸大)the problems．When the student meets another miserable person from the same country he will pour out his unhappy feelings．Together they can complain in their native language．Although this complaining provides temporary satisfaction it certainly does not help him adapt to a new society．Being negative will never get rid of the feelings of frustrations．The mature person understands that a positive attitude determination and flexibility are important in making the change successful．A sense of humor is a big help． (1) Nowadays flying abroad is ________． [　　] A． limited to rich tourists and wealthy businesspeople B． more convenient but less safe C． common for the average person D． not common for the average person (2) “The system” in the third paragraph includes the following except ________． [　　] A． social customs B． bargaining practices C． politics D． foreign culture (3) Culture shock affects foreigners ________． [　　] A． in just the same way B． in the same degree C． in quite similar ways D． in different degrees (4) Endless frustrations of the early days in a new country would create ________． [　　] A． dissatisfaction B． discomfort C． hostility D． all of the above (5) The following are important in fighting culture shock except ________． [　　] A． determination B． a positive attitude C． a sense of humor D． hostility