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Stockholm Summit B. at the Johannesburg Earth Summit C. by the World Health Organization D. by China39。s former Premier Zhu Rongji 2. Which of the following is the main cause of millions of deaths in rural areas ? A Lack of drinking water B. Poor sanitation C. Air pollution D. Freezing cold first paragraph mainly tells us _______. A. where the Earth Summit was held B. when the Earth Summit is held C. how people discuss the most important problems D. what is the function of the Earth Summit 4. Which of the following best expresses the main idea of the passage ? A. Different countries have different opinions about development B. Equality and fairness are badly needed in the today39。s world C. The Earth Summit , a way to save the earth D. Sustainable development , the future for the world third paragraph suggests that ______. A. it is not too late for us to do something to save the ea