I. Listen
Listen to the text with the help of the following notes.
1. A crowded slum district : 一個擁擠貧民窟地區(qū)。
2. The temperature was well over 100: 氣溫高100度（華氏）以上。
3. People holding on to the sides of buses: 人們吊掛在公共汽車的兩側(cè)。
4. Since that night, I’ve known what overpopulation feels like: 從那天晚上起，我便知道人口過剩是什么滋味了。
5. it is only when people’s living standards begin to rise that birth rates begin to fall: 只有在人們生活水平提高時，出生率才會開始下降。
6. people’s incomes are so low they have nothing to spare for savings: 人們的收如此之低以致于他們無錢存起來。
7. people look to their children to provide them with security in their old age: 人們指望在年老時他們的孩子給他們提供生活保障。
8. poor people in a developing country will need to see clear signs of much better conditions ahead before they will think of having smaller families:發(fā)展中國家的窮人需要看到生活明顯改善的前景時才會考慮組建小型的家庭。
9. depend on a very much wider acceptance of family planning: 取決于（人們對計劃生育政策更為廣泛的接受。
10. basic changes in attitudes: 在觀念上的根本變化。
Listen to the text with the help of the following notes.
1. A crowded slum district : 一個擁擠貧民窟地區(qū)。
2. The temperature was well over 100: 氣溫高100度（華氏）以上。
3. People holding on to the sides of buses: 人們吊掛在公共汽車的兩側(cè)。
4. Since that night, I’ve known what overpopulation feels like: 從那天晚上起，我便知道人口過剩是什么滋味了。
5. it is only when people’s living standards begin to rise that birth rates begin to fall: 只有在人們生活水平提高時，出生率才會開始下降。
6. people’s incomes are so low they have nothing to spare for savings: 人們的收如此之低以致于他們無錢存起來。
7. people look to their children to provide them with security in their old age: 人們指望在年老時他們的孩子給他們提供生活保障。
8. poor people in a developing country will need to see clear signs of much better conditions ahead before they will think of having smaller families:發(fā)展中國家的窮人需要看到生活明顯改善的前景時才會考慮組建小型的家庭。
9. depend on a very much wider acceptance of family planning: 取決于（人們對計劃生育政策更為廣泛的接受。
10. basic changes in attitudes: 在觀念上的根本變化。