2. 职称英语
  3. In the early part of the 20th century, physicians discovered that blood transfus

In the early part of the 20th century, physicians discovered that blood transfus

游客2023-09-23  50
问题 In the early part of the 20th century, physicians discovered that blood transfusions often failed because ______. [br] A baby’s blood type is decided by ______.
选项 A、his father or his mother
B、his mother and his father
C、his grandparents
D、himself
答案 B
解析 此题可根据常识来做，孩子的血型由父母决定。
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