II. Fill each blank in the following passage with one suitable word.(10pts)
Rivers are one of the world’s most important natural resources. Many cities are on large rivers, and (1)................every country has at least one river that plays an important part in the (2)................of its people.
Besides transportation, rivers (3)................food, water for crops, water to drink, and opportunities for recreation for people who live along their (4)................. And in order to get (5)................ for crops, engineers sometimes build a dam (6)................a river and let the water become a lake behind the dam. Then people can use their water not only to irrigate fields but to make electricity for homes and industries as (7).................
However, the water often becomes (8)................when cities on river banks grow in size and the number of industries (9)................. We are learning that it is necessary to keep rivers clean (10)................we don’t want to enjoy the benefits of the natural resources.
Refer
Rivers are on of the world's most important natural resources. Many cities are on the large rivers, and almost every country has a least one river that plays an important part in the lives of its people. Besides transportation, rivers provide water for crops, water to drink, and recreation for people who live along their banks And in order to get water for crops, engineers sometimes build a dam across a river and let water become a lake behind the dam. Then people can use their water not only to irrigate fields but also to make electricity for homes and industries as well. However the water often becomes polluted when cities on river bank grow in size and the number of industries increases. We are learning that it is necessary to keep rivers clean if we want to enjoy the benefits of the natural resources.
