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【单选题】
如图，已知AB∥CD，AD与BC相交于点O，AO∶DO=1∶2，那么下列式子错误的是 [     ]
A.
BO∶CO=1∶2；
B.
AB∶CD=1∶2；
C.
AD∶DO=3∶2；
D.
CO∶BC=1∶2．
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参考答案：
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lying about college degrees has become a widespread problem
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college degrees can now be purchased easily
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【判断题】A letter of application can be an important tool in helping you land an interview.
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【单选题】按先后顺序依次打开了d1.docx、d2.docx、3.docx、d4.docx四个文档,当前的活动窗口是( )。
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相关题目：
【判断题】畜禽标识是指经国务院农业部门批准使用的耳标、电子标签、脚环以及其他承载畜禽信息的标识物。
A.
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B.
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【单选题】Which of the following is NOT a natural devastation?
A.
Cut trees.
B.
Abuse land.
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【单选题】下列不属于无人机应用领域的是Which one is NOT in the fields of UAV’s application?
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【判断题】Irrigation is defined as the artificial application of water to land for the purpose of increasing crops.
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【单选题】Passage2　　You're busy filling out the application form for a position you really need; let's assume you once actually completed a couple of years of college work or even that you completed your degree...
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【判断题】A letter of application can be an important tool in helping you land an interview.
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B.
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【单选题】按先后顺序依次打开了d1.docx、d2.docx、3.docx、d4.docx四个文档,当前的活动窗口是( )。
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【判断题】Land application of wastewater is a treatment without risks. ( )
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B.
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