单项选择题

According to the passage, which of the following is used in explaining a muscle movement

A．The flow of blood to the muscles.
B．Classical conditioning.
C．Protein interaction.
D．Stimuli through the cells.
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单项选择题
Which of the following is the type of scientific explanation most likely used by a molecular biologist
A．Argumentation.
B．Deduction.
C．Reduction.
D．Generalization.
单项选择题
What does the passage mainly discuss
A．The difference between psychology and physiology.
B．The difference between human and animal behavior.
C．How fear would be explained by an psychologist .
D．How scientists differ in their approaches to explain things.
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