题目内容
（请给出正确答案）
[主观题]
From the passage we can infer that______.A．experiments are more or less significant for re
From the passage we can infer that______.
A．experiments are more or less significant for researches concerned
B．the successful experiments result from perfect scientific means
C．human cases are more effective in observing the brain activity
D．the result of scientific research should be set aside for a period of time before it's applied
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