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【单选题】
下面关于数列说法正确的是:( )
A.
在有理数内，单调有界数列必存在极限
B.
有界数列必收敛
C.
收敛数列必有界
D.
单调数列必是收敛数列
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举一反三
【单选题】下列关于等高线的说法中，正确是（　　）
A.
等高线上的数值表示的是高出海平面的垂直距离
B.
等高线的数值越大，表示海拔越低
C.
等高线相交的地方表示的是鞍部
D.
等高线所示的封闭曲线表示的都是山顶
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【单选题】听力原文：W：I'm so sorry for being late．You must have been waiting for a long time． M：That's all right．Actually，I got here just a couple of minutes ago． Q：What does the man imply? (14)
A.
He nearly missed the appointment.
B.
He also felt sorry for being late.
C.
He didn't arrive so early either.
D.
He is 'all right now.
查看完整题目与答案
【简答题】PART TWO You work for Global institute inc. , which produces softwares. You are responsible for Quality Management System. Study the following graph which shows the effort taken by your company and IB...
查看完整题目与答案
【单选题】一I still cannot figure out why he missed his flight． 一He an accident on the way to the airport．
A.
could have had
B.
should have had
C.
would haye had
D.
must have had
查看完整题目与答案
【多选题】平面上的坡度线的特点说法正确的是:
A.
一定与等高线垂直
B.
一个平面中有很多坡度不同的坡度线
C.
坡度线的坡度可以代表其所在倾斜平面的坡度
D.
坡度线就是平面内倾斜程度最大的最大斜度线
查看完整题目与答案
【单选题】Mr .Smith ______ the first bus, otherwise he should have arrived  here  by now.
A.
should have missed
B.
must have caught
C.
must have missed
D.
might miss
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【多选题】下面有关等高线的说法，正确的是（）。
A.
同一条等高线上各点的高程都相等
B.
等高线是闭合曲线，如不在本图幅内闭合，则必在图外闭合
C.
等高线平距小，表示坡度缓等高线平距大，表示坡度陡。
D.
等高线与山脊线.山谷线成正交。
E.
除在悬崖或绝壁处外，等高线在图上不能相交或重合。
查看完整题目与答案
【单选题】高龄老年人是指老年人的年龄为
A.
≥60岁
B.
≥61岁
C.
≥65岁
D.
≥80岁
E.
≥90岁
查看完整题目与答案
【单选题】高龄老年人是指老年人时序年龄
A.
≧70岁
B.
≧80岁
C.
≧85岁
D.
≧90岁
E.
≧100岁
查看完整题目与答案
【单选题】The best way ______ your English is ______ grammar. [     ]
A.
improve, study
B.
to improve, to study
C.
to improve, study
D.
improving, to study
查看完整题目与答案
相关题目：
【单选题】下列关于等高线的说法中，正确是（　　）
A.
等高线上的数值表示的是高出海平面的垂直距离
B.
等高线的数值越大，表示海拔越低
C.
等高线相交的地方表示的是鞍部
D.
等高线所示的封闭曲线表示的都是山顶
查看完整题目与答案
【单选题】听力原文：W：I'm so sorry for being late．You must have been waiting for a long time． M：That's all right．Actually，I got here just a couple of minutes ago． Q：What does the man imply? (14)
A.
He nearly missed the appointment.
B.
He also felt sorry for being late.
C.
He didn't arrive so early either.
D.
He is 'all right now.
查看完整题目与答案
【简答题】PART TWO You work for Global institute inc. , which produces softwares. You are responsible for Quality Management System. Study the following graph which shows the effort taken by your company and IB...
查看完整题目与答案
【单选题】一I still cannot figure out why he missed his flight． 一He an accident on the way to the airport．
A.
could have had
B.
should have had
C.
would haye had
D.
must have had
查看完整题目与答案
【多选题】平面上的坡度线的特点说法正确的是:
A.
一定与等高线垂直
B.
一个平面中有很多坡度不同的坡度线
C.
坡度线的坡度可以代表其所在倾斜平面的坡度
D.
坡度线就是平面内倾斜程度最大的最大斜度线
查看完整题目与答案
【单选题】Mr .Smith ______ the first bus, otherwise he should have arrived  here  by now.
A.
should have missed
B.
must have caught
C.
must have missed
D.
might miss
查看完整题目与答案
【多选题】下面有关等高线的说法，正确的是（）。
A.
同一条等高线上各点的高程都相等
B.
等高线是闭合曲线，如不在本图幅内闭合，则必在图外闭合
C.
等高线平距小，表示坡度缓等高线平距大，表示坡度陡。
D.
等高线与山脊线.山谷线成正交。
E.
除在悬崖或绝壁处外，等高线在图上不能相交或重合。
查看完整题目与答案
【单选题】高龄老年人是指老年人的年龄为
A.
≥60岁
B.
≥61岁
C.
≥65岁
D.
≥80岁
E.
≥90岁
查看完整题目与答案
【单选题】高龄老年人是指老年人时序年龄
A.
≧70岁
B.
≧80岁
C.
≧85岁
D.
≧90岁
E.
≧100岁
查看完整题目与答案
【单选题】The best way ______ your English is ______ grammar. [     ]
A.
improve, study
B.
to improve, to study
C.
to improve, study
D.
improving, to study
查看完整题目与答案