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填空:九分之四:( )=5:18 六分之一:九分之一=( ):12

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填空:九分之四:( )=5:18 六分之一:九分之一=( ):12
应用题:1、一个长方形长和宽的比是3:2,这个长方形的周长是30厘米,它的长和宽各是多少?
英语的:三、根据答句写问句
( My music teacher is quiet.
( Her cat is under the bed.
( My father is an actor.
( Mike has lunch at home.
( There are four sesons in a year.
填空:九分之四:( )=5:18 六分之一:九分之一=( ):12
填空:九分之四:(五分之八)=5:18 六分之一:九分之一=(18):12
应用题:1、 解∶ 设长为a 宽为b 则2a+2b=30 a∶b=3∶2 ∴a=18 b=12
英语的:三、根据答句写问句( Who's quiet in the class?)
( Where is her cat?
( What's your father do?)
(Where dose Mike have lunch )
(how many sesons are there in a year?)