2. 外语
  3. In the early part of the 20th century, physicians discovered that blood transfusions often failed because ______. Which of the

In the early part of the 20th century, physicians discovered that blood transfusions often failed because ______. Which of the

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问题 In the early part of the 20th century, physicians discovered that blood transfusions often failed because ______.
Which of the following is NOT true according to the passage?
选项 A、The four blood types are known as A, B, AB, and O.
B、Blood type A contains red blood cells that have a substance A on their surface.
C、Blood type B contains an antibody directed against substancea.
D、Blood type AB contains antibody, but red cells in this type of blood neither contain both A and B substances.
答案D
解析 在D项中，错误在于多了“neither”一词，使整句话意思完全相反。
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