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【简答题】
克氏综合征是人类的一种遗传病，现有一对表现型正常的夫妇生了一个患克氏综合征的男孩，该男孩的染色体组成为44+XXY。请回答： 若这个患克氏综合征的男孩同时患有有色盲，写出该家庭部分成员的基因型（色盲等位基因以以B和b表示）：母亲（）儿子（）导致上述色盲男孩患克氏综合征的原因是：他的（）（填“父亲”或“母亲”）的生殖细胞在进行（）分裂形成配子时发生了染色体不分离。
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举一反三
【单选题】Which of the following is not mentioned as an effect of the dowry system?
A.
The husband had to share the power of decision in marriage.
B.
The husband was given control over his wife' s property.
C.
The wife gained a powerful economic position.
D.
The wife was protected from desertion.
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【简答题】After many years of hard work,Mary and her husband had at last paid ________all the money they had borrowed. A．for B．out C．in D．off
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【单选题】判断量感最佳捷径是记住量感等于()就好。
A.
成熟度
B.
暗沉度
C.
柔和度
D.
其余选项都不对
查看完整题目与答案
【单选题】The results of previous research on the effects of calorie restriction are unconvincing because
A.
the subjects of the research were either of overweight or slightly underweight.
B.
calorie-restricted animals showed different physical signs in the research.
C.
the decrease in body temperature may result from changes of outside temperature.
D.
people cannot tell the benefits of losing weight from those of calorie restriction.
查看完整题目与答案
【单选题】Despite their lack of success so far, research scientists have ______ in their research for a cure for AIDS.
A.
maintained
B.
retained
C.
insisted
D.
persevered
查看完整题目与答案
【单选题】The article made no ______ to previous research on the subject.
A.
researches
B.
entrances
C.
accesses
D.
references
查看完整题目与答案
【单选题】已知函数 的导函数 的图象如图,则下列叙述正确的是 ( )
A.
函数 在 上单调递减
B.
函数 在x=-1 处取得极大值
C.
函数 在x=-4 处取得极值
D.
函数 只有一个极值点
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【简答题】A．Because she lived with her parents. B．Because her husband had had a nervous breakdown. C．Because she had less strain. D．Because she could speak French and German fluently.
查看完整题目与答案
【单选题】已知定义在R上的函数f（x），其导函数f′（x）的大致图象如图所示，则下列叙述正确的是（　　）
A.
f（b）＞f（c）＞f（d）
B.
f（b）＞f（a）＞f（c）
C.
f（c）＞f（b）＞f（a）
D.
f（c）＞f（b）＞f（d）
查看完整题目与答案
【单选题】已知定义在上的函数 ，其导函数 双图象如图所示，则下列叙述正确的是（）
A.
B.
C.
查看完整题目与答案
相关题目：
【单选题】Which of the following is not mentioned as an effect of the dowry system?
A.
The husband had to share the power of decision in marriage.
B.
The husband was given control over his wife' s property.
C.
The wife gained a powerful economic position.
D.
The wife was protected from desertion.
查看完整题目与答案
【简答题】After many years of hard work,Mary and her husband had at last paid ________all the money they had borrowed. A．for B．out C．in D．off
查看完整题目与答案
【单选题】判断量感最佳捷径是记住量感等于()就好。
A.
成熟度
B.
暗沉度
C.
柔和度
D.
其余选项都不对
查看完整题目与答案
【单选题】The results of previous research on the effects of calorie restriction are unconvincing because
A.
the subjects of the research were either of overweight or slightly underweight.
B.
calorie-restricted animals showed different physical signs in the research.
C.
the decrease in body temperature may result from changes of outside temperature.
D.
people cannot tell the benefits of losing weight from those of calorie restriction.
查看完整题目与答案
【单选题】Despite their lack of success so far, research scientists have ______ in their research for a cure for AIDS.
A.
maintained
B.
retained
C.
insisted
D.
persevered
查看完整题目与答案
【单选题】The article made no ______ to previous research on the subject.
A.
researches
B.
entrances
C.
accesses
D.
references
查看完整题目与答案
【单选题】已知函数 的导函数 的图象如图,则下列叙述正确的是 ( )
A.
函数 在 上单调递减
B.
函数 在x=-1 处取得极大值
C.
函数 在x=-4 处取得极值
D.
函数 只有一个极值点
查看完整题目与答案
【简答题】A．Because she lived with her parents. B．Because her husband had had a nervous breakdown. C．Because she had less strain. D．Because she could speak French and German fluently.
查看完整题目与答案
【单选题】已知定义在R上的函数f（x），其导函数f′（x）的大致图象如图所示，则下列叙述正确的是（　　）
A.
f（b）＞f（c）＞f（d）
B.
f（b）＞f（a）＞f（c）
C.
f（c）＞f（b）＞f（a）
D.
f（c）＞f（b）＞f（d）
查看完整题目与答案
【单选题】已知定义在上的函数 ，其导函数 双图象如图所示，则下列叙述正确的是（）
A.
B.
C.
查看完整题目与答案
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