The passage is mainly about ______. [br] The British DNA database is established

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问题 The passage is mainly about ______. [br] The British DNA database is established to ______.

选项 A、find the identical DNA profiles
B、help criminal investigations
C、store people’s personal information
D、treat people of potential diseases

答案 B

解析细节题。这一题的问题是关于英国DNA数据库的目的。我们在文章的第四段可以找到与"British DNA database"相关的内容，“In Britain，a national criminal database’’。由此可见，这个数据库的目的就是帮助调查犯罪，所以答案是B。

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Thepassageismainlyabout______.[br]Bysaying"DNAtestingisnotanunfail