单项选择题

A．Whether it can be detected and checked.
B．Whether it will lead to widespread food shortage.
C．Whether global warming will speed up in the future.
D．Whether it will affect their own lives.
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单项选择题
A．Pollution of the environment.B．A new generation of pest killers.C．Over-killing by hunters.D．Destruction of their natural homes.
A．Pollution of the environment.
B．A new generation of pest killers.
C．Over-killing by hunters.
D．Destruction of their natural homes.
单项选择题
A．Most Londoners were frightened.B．Most Londoners became rather confused.C．Most Londoners took Exercise Flood Call calmly.D．Most Londoners complained about the trouble caused by Exercise Flood Call.
A．Most Londoners were frightened.
B．Most Londoners became rather confused.
C．Most Londoners took Exercise Flood Call calmly.
D．Most Londoners complained about the trouble caused by Exercise Flood Call.
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