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Dear Mr. Li. I read in the newspaper the other day that ......

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单项选择题
What can be inferred from the passage
A．Insects are the most adaptable creatures.
B．Insects would be out of control if nothing were done about the current situation.
C．Insects will someday devour all plants on the Earth.
D．Insects have developed resistance to both botanical and artificial poisons rapidly.
单项选择题
The control of artificial devices is improving because _____________.
A．video signals can be transformed into light patterns
B．bionic machines have existed for centuries
C．artificial devices such as arms, legs and eyes require better control than bionic machines
D．science has made great advances in electronics
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