单选题 You have been badly injured in a car accident. It is necessary to give you a blood transfusion. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you.
【正确答案】
【答案解析】假设你在一次车祸中受伤，就有必要给你输血，但是必须慎重地给你选择血型。如果选择的血型和你的差别太大的话，这样输血可能会导致你死亡。