SORU: anlam bakımından parçanın bütünlüğünü bozan cümleyi bulunuz
(I) The role of the upper leg is minimal when walking on level ground. (II) Slowing down gradually at the end of exercise helps prevent dizziness. (III) When the legs relax, blood pools in the veins near them. (IV) To return the blood towards the heart, the leg muscles must contract. (V) When exercise is suddenly stopped, blood pools in the legs and not enough blood goes to the brain, causing dizziness.