In this section, you will hear three news reports. At the end of each news report, you will hear two or three 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、A warmer and easier earth for human life.
B、Severe droughts.
C、Damaging storms.
D、Rising sea levels.