单项选择题

What did people do to solve the problem of rain lack around Chad Lake

A．They moved out of this area.
B．They drew water from Lake Chad.
C．They carried water from other areas.
D．They utilize seawater near this area.
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单项选择题
What is scientists' attitude towards the future of Chad Lake
A．Pessimism.
B．Hopeful.
C．Indifferent.
D．Doubtful.
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