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【单选题】
妊娠（ ）是辐射引发智力迟钝、小头症及癫痫发作的最大危险期
A.
0-7周
B.
8-15周
C.
16-25周
D.
26-32周
E.
32-36周
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Mental Retardation (智力迟钝)Mental retardation is a condition in which people have lower than normal intelligence and are unable to function at the level expected for their age．People with mental retarda...
A.
was born prematurely.
B.
has lower than normal intelligence.
C.
has low intelligence and low daily living skills.
D.
has normal intelligence but difficulties in learning.