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【单选题】
物理层的功能之一是( )。A.
实现实体间的按位无差错传输
B.
向数据链路层提供一个非透明的位传输
C.
向数据链路层提供一个透明的位传输
D.
在 DTE 和 DTE 间完成对数据链路的建立、保持和拆除操作
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【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.
【简答题】A lady wanted a birthday gift from her husband. For many months she had liked a beautiful , and knowing her husband could it, she told him that was all she wanted. On the morning of the , her husband ...
【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
【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 wife was protected from desertion.
C.
The wife gained a powerful economic position.
D.
The husband was given control over his wife's property.
【单选题】The article made no ______ to previous research on the subject.
A.
researches
B.
entrances
C.
accesses
D.
references
【简答题】Cathy had hardly said a word since supper, nor had her husband．
【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
【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）
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