【简答题】阅读理解. A nearly ice-free Arctic Ocean inthe summer may happen three timessooner than scientists have assessed.New research says the Arctic might lose most of its ice cover in summer in as few as 30 yea...
【单选题】Beijing, ______for hosting the 2008 Olympic Games, ____its first loop (圈) of green belt around the downtown, ____an area of 102.3 square kilometers, in the past three years.
【简答题】Gap fill Put these words into the spaces in the paragraph below. first resumed moratorium auctioned port quota snapped whalers Japan has (1) ____________ commercial whaling after a hiatu...