Most new people were born in developing countries.These countries are found in much of Africa，South America and some parts of Asia.In the developed countries of Europe and North America，the population is growing very slowly.This is because women in these countries have，on average（平均），only one or two children.In the developing countries，many women have five or more children.In 1950，around twenty-five percent of the world's population lived in the developed countries.By 2050，these countries will be home to only around one tenth of the world's population.
    In the developing countries，more than one billion people are still living below the poverty（貧困）line.These people do not have enough food to eat and they live in poor housing.Children get little time at school and people suffer（遭受痛苦）from many kinds of diseases.
    （4）At the beginning of the 21st century，the world's population was around six billion.The U.N.jye.ai said that the world's population will level off（呈平穩(wěn)狀態(tài)）at 12.5 billion by the year 2100.Other groups，think the world's population will continue to grow，reaching 14 billion before it becomes stable（穩(wěn)定的），or even falls.

（1）In what areas of the world can developing countries be found to have population growth？

In much of Africa，South America and some parts of Asia.

In much of Africa，South America and some parts of Asia.

（2）In 1950，what percent of the world's population lived in the developing countries？

Around seventy-five percent.

Around seventy-five percent.

（3）將文中劃線句子翻譯成漢語。

在發(fā)展中國家，仍有10億多人生活在貧困線以下。

在發(fā)展中國家，仍有10億多人生活在貧困線以下。

（4）寫出文中句（4）的同義句。
At the beginning of the 21st century，the world

had a population of

had a population of

about six billion.
（5）What does it talk about in the passage？

The world's population.

The world's population.