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...
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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.