A. UP B. ON C. OUT D. AWAYB. READ THE FOLLOWING PASSAGE AND MARK T...

26. A. up B. on C. out D. away

B. Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the

questions.

One of the most urgent environment problems in the world today is the shortage of clean water. Having clean

drinking water is a basic human right. But acid rain, industrial pollution and garbage have made many sources of

water undrinkable. Lakes and even entire seas have become large pools of poison. Lake Baikal in Russia is one of

largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not

exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial pollutants

which pour into the lake every day. Even where law existed, the government did not have the power to enforce

them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world's water

surface. But it is the dumping ground for 50% of all marine pollution. Almost sixteen countries regularly throw

industrial wastes a few miles off shore. Water is free to everyone. A few years ago people thought that the supply of

clean water in the world was limitless. Today, many water supplies have been ruined by pollutants and sewage.

Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something

now.