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【单选题】
70岁,老年男性病人。左侧度股沟突出半球形包块,不降入阴囊,咳嗽冲击试验阴性,易还纳。应诊断为
A.
鞘膜积液
B.
隐睾
C.
股疝
D.
斜疝
E.
直疝
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B.
Stories about some female physicists.
C.
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D.
Women's changing attitudes to physics.
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【单选题】The leading theoretical physicists are searching for a 'theory of everything' because ______.
A.
the existing theories are out of date
B.
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