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【单选题】
在一次考试中,总分最高的27%的考生在某道生物题中有80%的人答对,总分最低的27%的考生在该题中有20%的人答对,则此题的区分度为
A.
0.8
B.
0.2
C.
0.27
D.
0.6
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参考答案：
参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Speaker A: Im worried about those classes I missed when I was sick. Speaker B:______
A.
I am glad that you have got well.
B.
Don't worry. Everything will be all right.
C.
I'll try to bring you up to date on what we've done.
D.
Maybe you should explain to our teacher why you were absent from class last week.
查看完整题目与答案
【单选题】15 When did the accident happen?
A.
At about 8：00 am
B.
At about 9：00 am
C.
At aboutl0：00 am
查看完整题目与答案
【单选题】Now when talking about economic reform. I am very ______ aware of the shadow hanging over most African countries' debt.
A.
well
B.
far
C.
much
D.
greatly
查看完整题目与答案
【单选题】吞服强酸、强碱类腐蚀性药物的患者,切忌进行的护理操作
A.
口腔护理
B.
洗胃
C.
导泻
D.
灌肠
E.
输液
查看完整题目与答案
【单选题】(12)引入二叉线索树的目的是( )。
A.
加快查找结点的前驱或后继的速度
B.
为了能方便的找到双亲
C.
为了能在二叉树中方便的进行插入与删除
D.
使二叉树的遍历结果唯一
查看完整题目与答案
【单选题】When did the accident happen?
A.
at about 8:00 am
B.
at about 9:00 am
C.
at about 10:00 am
查看完整题目与答案
【单选题】When did the accident happen?
A.
At about 8:00 am.
B.
At about 9:00 am.
C.
At about 10:00 am.
查看完整题目与答案
【单选题】when did the accident happen ?
A.
at about 8:00 am
B.
at about 9:00am
C.
at about 10:00am
查看完整题目与答案
【单选题】在星形结构中,常见的中央结点为( )
A.
路由器
B.
集线器
C.
网络适配器
D.
调制解调器
查看完整题目与答案
【单选题】引入二叉线索树的目的是 ( )
A.
加快查找结点的前驱或后继的速度
B.
为了能在二叉树中方便地进行插入与删除
C.
为了能方便地找到双亲
D.
使二叉树的遍历结果唯一
查看完整题目与答案
相关题目：
【单选题】Speaker A: Im worried about those classes I missed when I was sick. Speaker B:______
A.
I am glad that you have got well.
B.
Don't worry. Everything will be all right.
C.
I'll try to bring you up to date on what we've done.
D.
Maybe you should explain to our teacher why you were absent from class last week.
查看完整题目与答案
【单选题】15 When did the accident happen?
A.
At about 8：00 am
B.
At about 9：00 am
C.
At aboutl0：00 am
查看完整题目与答案
【单选题】Now when talking about economic reform. I am very ______ aware of the shadow hanging over most African countries' debt.
A.
well
B.
far
C.
much
D.
greatly
查看完整题目与答案
【单选题】吞服强酸、强碱类腐蚀性药物的患者,切忌进行的护理操作
A.
口腔护理
B.
洗胃
C.
导泻
D.
灌肠
E.
输液
查看完整题目与答案
【单选题】(12)引入二叉线索树的目的是( )。
A.
加快查找结点的前驱或后继的速度
B.
为了能方便的找到双亲
C.
为了能在二叉树中方便的进行插入与删除
D.
使二叉树的遍历结果唯一
查看完整题目与答案
【单选题】When did the accident happen?
A.
at about 8:00 am
B.
at about 9:00 am
C.
at about 10:00 am
查看完整题目与答案
【单选题】When did the accident happen?
A.
At about 8:00 am.
B.
At about 9:00 am.
C.
At about 10:00 am.
查看完整题目与答案
【单选题】when did the accident happen ?
A.
at about 8:00 am
B.
at about 9:00am
C.
at about 10:00am
查看完整题目与答案
【单选题】在星形结构中,常见的中央结点为( )
A.
路由器
B.
集线器
C.
网络适配器
D.
调制解调器
查看完整题目与答案
【单选题】引入二叉线索树的目的是 ( )
A.
加快查找结点的前驱或后继的速度
B.
为了能在二叉树中方便地进行插入与删除
C.
为了能方便地找到双亲
D.
使二叉树的遍历结果唯一
查看完整题目与答案