[简答题]Some people in the city use as much water as they wish, and take it for granted.

[简答题]Some people in the city use as much water as they wish, and take it for granted.

[填空题]People use it to travel across water.

[填空题]Why people can’t use all of the fresh water
Because some of it is（）.

[单项选择]Americans use more water than any other people in the world. If we continue to use water at the rate we do now, we will soon not have enough to meet our needs. In 1980, 40 billion gallons were used each day in the United States. In 1990, 700 billion gallons were used. The average Americans uses almost 90 gallons of water a day for personal use. And much move water is needed to make the things American people like to have. For example, it takes thousands of gallons of water to make one pound of beef for the dinner table. It takes more than 100,000 gallons of water to make a car. If we include these uses of water, the average American uses about 2000 gallons of water a day.
The best title for the passage is ______.
A. Water Use in the United States
B. The Problem of Water Use
C. Water Use in the World
D. Water Use in the Twentieth Century

[单项选择]
Americans use more water than any other people in the world. If we continue to use water at the rate we do now, we will soon not have enough to meet our needs. In 1980, 40 billion gallons were used each day in the United States. In 1990, 700 billion gallons were used. The average Americans use almost 90 gallons of water a day for personal use. And much move water is needed to make the things American people like to have. For example, it takes thousands of gallons of water to make one pound of beef for the dinner table. It takes more than 100000 gallons of water to make a car. If we include these uses of water, the average American uses about 2000 gallons of water a day．
The best title for the passage is ______.
A. Water Use in the United States
B. The Problem of Water Use
C. Water Use in the World
D. Water Use in the Twentieth Century

[填空题]How can people make use of sea water
They make use of it by （） the salt.

[填空题]S1. Why do people use multisources of water in their everyday life