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【简答题】
大圆半径是6厘米，小圆的半径是4厘米，大圆的周长与小圆周长的最简整数比是______，大圆面积与小圆面积的最简整数比是______．
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反馈参考答案：
举一反三
【单选题】—What made you so angry?—______.
A.
Tom having been late again
B.
Tom to be late again
C.
Tom' s being late again
D.
Tom was late again
【单选题】Uncle Tom ________ an interesting story for the children.
A.
made from
B.
made out
C.
made up
D.
made of
【单选题】___taken away made his parents worried and they had to turn to the police for help.
A.
Tom’s
B.
Tom being
C.
Tom
D.
Tom’s being
【单选题】Tom ' s brother _____ me _____ Tom just now.
A.
make , to help
B.
make , help
C.
made , help
D.
made, to help.
【简答题】分离单糖苷、双糖苷、三糖苷采取哪种色谱法,洗脱顺序如何?
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