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【单选题】
最现揭示转座现象且为此获得诺贝尔奖的科学家是( )。
A.
Watson
B.
Crick
C.
McClintock
D.
Mendel
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】在铣削铸铁等脆性金属时,一般( )。
A.
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B.
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【简答题】风暴中孩子害怕时,他的父母就抚慰他。 When the child was afraid in the storm, his parents him.
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