A. Atmospheric Scientists
B. The Calculations Made at the Berlin Workshop
C. The Previous Calculations of the Effect of Aerosols
D. The Scientists’ Agreement
E. The Authoritative Conclusion
F. Greenhouse Gases
Paragraph 2 ______

A. The introduction of GP cooperatives has been a negative development.
B. GP Cooperatives in Scotland benefit patients and doctors.
C. GP cooperatives have some disadvantages which would do harm to patients.
D. GP cooperatives are well-developed in Scotland.

A.They take vitamin C and use Echinacea.
B. They sleep more as the scientists suggest.
C. They try to stay indoors as much as possible
D. They sleep less to make time for exercise.