单选题:听第10段材料,回答题。 What should the students bring with them to the

题目内容:
听第10段材料,回答题。
What should the students bring with them to the exam? A.A final copy of the research project.
B.Copies of the midterm.
C.A few pens.

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如右图,已知直线AB是⊙O的切线,A为切点,OB交⊙O于点C,点D在⊙0上,且∠OBA=40°,则∠ADC=______

如右图,已知直线AB是⊙O的切线,A为切点,OB交⊙O于点C,点D在⊙0上,且∠OBA=40°,则∠ADC=_______.

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{MP3:http://wximg.233.com/attached/media/20160714/2016071416

{MP3:http://wximg.233.com/attached/media/20160714/20160714162949_4846.mp3}听音频,回

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Miss Holm's love for the Children's Hospital grew from

Miss Holm's love for the Children's Hospital grew fromA.a happy life living with

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箱内有大小相同的20个红球,80个黑球,从中任意取出1个,记录它的颜色后再放回箱内,进行搅拌后再任意取出1个,记录它的颜

箱内有大小相同的20个红球,80个黑球,从中任意取出1个,记录它的颜色后再放回箱内,进行搅拌后再任意取出1个,记录它的颜色后又放回箱内搅拌.假设三次都是这样抽取

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