Task 1
综合写作
【主题】releasing SO2 to prevent global warming
Reading： critics on releasing SO2 to prevent global warming：(1).negative effect on environment, acid rain;(2).very expansive;(3).limited effect
Listening： still a very good solution：(1).SO2 only forms acid rain with great amount of vapour at lowest level of atmosphere, no negative effect when releasing so2 at higher level of atmosphere;(2).Compare to other solutions, cheap. example: reducing fuel burning emission, need great scientific break through which is 100 times cost of releasing SO2;(3).little temperature reduction have far-reaching positive effect on climate
Task 2
独立写作
Do you agree or disagree with the statement ： Compared with people who live in cities， people who live in rural areas can take better care of families.