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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单项选择题
Which of the following is true according to this passage
A．Chad Lake located in the middle of Chad in northern Africa.
B．The water from Chad water can now only be used for irrigation.
C．The area around Chad Lake has suffered from heavy rain lack many decades.
D．Population around the Chad Lake now begins to decrease due to water lack.
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