watching tv is one of the things to do to entertain but if we spend too much time for it will meet many harmful effects. If sitting in front of the tv for too long, the green light from the tv will affect the eye impairs vision, we don't see clearly even cause cancer. Besides if we spend too much time watching tv, we will not be able to participate in sports activities and do not have much time to family parties. so we should not spent too much time watching tv
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