填空题
填空题 What is the main responsibility of the, United Nations Population Fund according to the passage?
填空题 How many people are there in the world today?
填空题 The percentage of the population growth in the 49 least developed countries is expected to be ______ in 50 years.
填空题 The UN thinks people in the richest countries use more of ______ than people in developing countries.
填空题 Who would be given more power in order to have slower population growth, according to the UN Population Fund?