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【单选题】
下列叙述中正确的是 [ ]A.
细胞的DNA都在染色体上
B.
细胞每条染色体都只有一个DNA分子
C.
减数分裂中染色体与基因的行为一致
D.
以上叙述均对
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【单选题】What is the programme mainly about?
A.
History of surnames in America
B.
Reasons for inventing surnames
C.
Traditional surnames in Europe
D.
Feminist movement in the 1960s
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A.
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B.
N
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