【練習】

Humankind’s future safety and longevity of life on Earth largely depend on the environment which we live. Keeping the air we __1

breathe free of pollution is a major priority towards making this earth a safe place. Other areas of concern are water, land, the ozone layer, and the preservation of flora and fauna of the planet.

Every country has ecological issues to deal. In South America, __2

the rain forests are rapidly disappearing as people burn and cut down trees to make for farmland. Many Middle-Eastern and Asian countries __3

have a battle to fight with air, water, and land pollution. Lakes and swamps are spread with debris. __4

Mass chemical spraying is used to kill pests on trees and plants. Abundant __5

use of water in countries as China has caused major water shortage. __6

Rivers become polluted by factories and the populations that live on their banks. Global warming is considered a major factor caused __7

the droughts in eastern China, the Sudan, Ethiopia, and northern Kenya.

The reduction of the ozone layer is blamed for the global warming trends in variant countries of this globe, and the spread of disease like skin __8

cancer. Societies at large need to pay attention to the existing problems in order to get of the imminent danger of famine, drought and diseases __9

that rise from the damage that pollution causes. __10

（責任編輯：liushengbao）