In this section, you will hear one news report. At the end of the news report, you will hear two questions. Both the news report and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D).A、The effect of water shortages on human beings.
B、The relationship between water issues and political disagreement and other tensions.
C、The advantages and disadvantages of building dams to solve water problems.
D、How to get safe water.