Pair Work: Watch the video clip twice and complete the following sentences according to what you have heard. Compare notes with your partner. The words in the box below may be new to you.
crisis /5kraIsIs/ n. 危机
sanitation /7sQnI5teISn/ n. 卫生
livestock /5laIvstk/ n. 家畜
1 The speaker is talking about the coming global water crisis/water
problem .
2 Water is the key component in our daily life, not only for human
use , but for energy, industry, agriculture , and livestock.
3 If you look at the earth , you will notice that over 75 % of our
blue planet is water. But the problem is only 3% of that water
is fresh water .
Watch the video clip and discuss the following questions with your classmates.
1. According to the video clip, what percentage of the earth surface is covered by water?
2. What percentage of the water all over the world is fresh water in liquid form?
3. On average, how many people do not have access to safe water?
4. What human activities contribute to water pollution?

