单项选择题

According to the passage; through which of the following is the energy released in the Sun pass before it becomes light

A．Electromagnetic space.
B．The solar surface.
C．The X-ray part of the spectrum.
D．Interplanetary space.
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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.
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.
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