Paragraf Tamamlama 124. Soru

124.

One of the wonders of modern medicine is spare-part surgery. This enables many of our joints to be replaced by man-made ones of stainless steel alloys, or plastics. A common joint replacement is that of the hip, but others such as elbow, shoulder and knee joints can also be replaced with artificial ones. The materials used in spare-part surgery have to be inert. ……….. . It would be very unpleasant to end up with a rusty hip joint.