【简答题】You have been badly injured in a car accident. It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident. However, special care must be taken in selecting ...
【简答题】听下面一段材料,回答第1-4题。 1. What is a blood transfusion? A. Losing a lot of blood in a serious accident or a difficult operation. B. Finding out the amount of blood a patient needs for an operation. C. Taking...