题目内容

A．Progress in medicine.B．Progress in computers.C．Progress in new materials.D．Progress

A. Progress in medicine.
B. Progress in computers.
C. Progress in new materials.
D. Progress in helicopters.

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Water expert Gleick has come up with the best solution to water-related problems.

A. Y
B. N
C. NG

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According to the passage all water pollutants come from household waste.

A. Y
B. N
C. NG

The people living in the United States will not be faced with water shortages.

A. Y
B. N
C. NG