单项选择题

A．Research methods and lines of approach.
B．Aims and objectives.
C．Key problems and research questions.
D．Works consulted and cited.
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单项选择题
A．Warm and humid.B．Cold and humid.C．Warm and dry.D．Cold and dry.
A．Warm and humid.
B．Cold and humid.
C．Warm and dry.
D．Cold and dry.
单项选择题
A．A state of confusion, lacking any order.B．Chaos theory.C．An apparent lack of order in a system.D．Obeys particular laws or rules.
A．A state of confusion, lacking any order.
B．Chaos theory.
C．An apparent lack of order in a system.
D．Obeys particular laws or rules.
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