The first paragraph mainly talks about ______.
A: the problems caused by river water
B: the necessity to irrigate the field
C: the water shortage in some countries
D: the canals carrying water to fields
A: the problems caused by river water
B: the necessity to irrigate the field
C: the water shortage in some countries
D: the canals carrying water to fields
举一反三
- Paragraph 1（） A: Ounces of Water Needed Per Day B: Importance of Water C: Composition of Water D: Signs of Dehydration E: Supply of Water F: Necessity for Bringing a Bottle for Water with You
- The passage mainly introduces the solution to water shortage problems.
- The best irrigation water is river water, pond water and lake water A: 正确 B: 错误
- The chief causes of water shortage are population growth and water pollution.
- Don’t sit on the chair- there ___ on it. A: is some water B: are some water C: is any water