like humans, killer whales have colonized a range of different habitats across the globe, occupying every ocean basin on the planet, with an empire that extend from pole to pole.
2019年6月四級(jí)真題（第二套）閱讀 Section A
More than paradise lost, a perishing rain forest could trigger a domino effect - sending winds and rains kilometers off course and loading the skies with even greater levels of greenhouse gases - that will be felt far beyond the Amazon basin.