Wheneverweseeabutton,weareeagertopressitbecauseweknow...
问题详情： Wheneverweseeabutton,weareeagertopressitbecauseweknowsomethingwillhappen.Thisistrueinmostcases,forexampleonadoorbellandonthe“on/off”buttonontheTV.Butsomebuttonsareactuallyfake,likethe“c...