During the time it takes you to read this sentence, the population of the world have grown by ten. That may not sound much, but it is 14,000 people in an hour.

Most of these new people were born in “developing countries”. 1. 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. 2. In the developing countries, more than one billion people already live below the poverty（貧困）line. 3. Children get little or no time at school and people suffer （遭受痛苦）from many kinds of diseases.

The UN has said that the worlds' population will reach 12. 5 billion people by the year 2100. Many experts are worrying that so fast population growth could have very bad results. 4.

根據(jù)短文內(nèi)容, 從下列選項(xiàng)中選出能填入文中空白處的最佳選項(xiàng), 選項(xiàng)中有一項(xiàng)多余。

A. These people do not have enough food to eat and they live in poor housing.

B. One of the main reason is the change of the lifestyle.

C. These countries are found in much of Africa, South America and parts of Asia.

D. It could hurt the environment and increase the number of poor people.

E. But in the developing countries, many women have five or more children.

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