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【判断题】
花菜花中DNA含量丰富,是提取DNA的好材料A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】He insisted that he ____ that and that he ____ free. [ ]
A.
didn't do; was set
B.
hasn't done; is set
C.
hadn't done; be set
D.
hadn't done; should set
【简答题】阅读理解。 Here are some short messages (留言) . Please read them first carefully and find the best answers to the questions: 1. Joy gets a lot of _______ today. A. letters B. books C. messages D. e-mails 2....
【单选题】下列说法不正确的一项是( )。
A.
股票的收益主要来源于股利和资本利得
B.
股利来源于公司的税后净利润
C.
资本利得收入的高低与投资者买入卖出的时机有关
D.
股利是投资人在股票市场上利用价格波动低买高卖赚取的差价收入
【简答题】阅读理解 Here are some emails for Jim. Please read them first carefully and find the best answers to the questions: Jim No.1: I'm going to have a party next weekend. Are you coming? From Mary Jim No.2 The...
【单选题】下列说法不正确的一项是( )。
A.
股票的收益主要来源于股利和资本利得
B.
股利来源于公司的税后净利润
C.
股利是投资人在股票市场上利用价格波动低买高卖赚取的差价收入
D.
资本利得收入的高低与投资者买入卖出的时机有关
【单选题】Which of the following is NOT an example of epigenetics?
A.
independent assortment of alleles
B.
genomic imprinting
C.
miRNAs
D.
paramutation
E.
X inactivation
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