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【单选题】
14/21 易位型Down综合征患者的核型 是________。A.
47,XXY
B.
47,XX(XY),+21
C.
45,XX(XY),-14,- 21,+t(14;21)(p11;q11)
D.
46,XX(XY),-14,+t(14;21) (p11;q11)
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He would melt in summer.
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【单选题】The weather report says there will be a warming this week, with the temperature slowly rising from the 40s into the 60s.
A.
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【单选题】下列有关材料标准的叙述,哪一个不正确?
A.
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B.
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C.
He wishes the rain would stop soon.
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