If the blood is too different from your own in blood transfusion, . The passage is mainly about .

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问题 If the blood is too different from your own in blood transfusion, ______.
The passage is mainly about ______.

选项 A、the relationship between blood and nationality
B、transfusion
C、human blood types
D、blood and gene

答案C

解析本题询问该篇文章的主要内容是什么。根据全文可知，本文主要讨论了人的血型，故选C。

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大学英语三级A级

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