题目

听下面一段独白，回答以下小题。 （1） What does the speaker mainly talk about? A . A country. B . A language. C . A sport. （2） Which are the most important islands in New Zealand? A . North and Stewart Island. B . South and Stewart Island. C . North and South Island. （3） What is Auckland known for? A . The hottest weather. B . The sailing boats. C . The beautiful harbor. （4） Which activity is the most popular in the South Alps? A . Skiing. B . Climbing. C . Sky diving.如图，四边形ABCD中，AD∥BC，AF=CE，BE⊥AC于E，DF⊥AC于F．试判断DC与AB的位置关系，并说明理由．