英语听力教程第三版(张民伦主编)Unit 1 The Earth at Risk听力原文
changes (because there is less rainfall) but this change affects the whole world. I mean, over half the world's rain forest has been cut down this century (20th century). B Now try this: listen to a more authentic version of the first part of the interview. Complete the outline.
Outline (1)
I. Environmental problems in different continents
A. Africa
1. Sahara Desert expansion
2. no grass for animals to eat (East Africa)
B. North America & most of Europe
1. situation — intensive farming/agriculture
2. potential problem — top soil blowing away
C. South America, Central Africa & Southern Asia
1. problem — tropical forests destruction
2. consequences