我国儿童的错畸形发生率达A.28.4% B.40% C.25% D.82%

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问题 我国儿童的错畸形发生率达A.28.4%B.40%C.25%D.82%E.91.2%

选项 A.28.4%
B.40%
C.25%
D.82%
E.91.2%

答案 B

解析
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