Medicine prevents and cures diseases, but on the other hand, it also exerts the unexpected effect which is harmful to organism at the same time, and this is called adverse reaction.
药物在防治疾病的同时也会产生对机体有害的作用和不期望产生的作用，即药物不良反应。
The subject was asked to distinguish between touches on the thumb and forefinger of the hand, and the number of errors - and the overall reaction time - were recorded.
测试者被要求区分是大拇指还是食指被触摸，错误的次数以及整个反应的时间被记录下来。
When flashing lights placed near the hand are activated, the number of errors rises and reaction time slows as the brain is forced to deal with the distraction.
当放在手边的闪光灯开始工作时，大脑不得不应付闪光灯造成的注意力分散，因此错误的次数增加，反应的时间缩短。
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