29. Mr.Flink argued in his book that cars would not be widely used in other countries because ________.
　　A) the once booming car market has become saturated
　　B) traffic jams in those countries are getting more and more serious
　　C) expensive motorways are not available in less developed countries
　　D) people worry about pollution and the diminishing oil resources

　　30. What’s wrong with Mr.Flink’s prediction?
　　A) The use of automobiles has kept increasing worldwide.
　　B) New generations of cars are virtually pollution free.
　　C) The population of America has not increased as fast.
　　D) People’s environmental concerns are constantly increasing.