1.The Earth is bigger than the ____ and it is much ______ than the moon,too.
2.In _________the sun is the biggest thing in our solar______.
3.The moon is ______ to the Earth.
4.The Earth is the ___________ of the four ____________.
[2].根据提示,补全对话.（每空一词）
A:Can I ________ you?
B:Yes,I'm looking for a shirt for my son.
A:What about the white one?
B:_________ _________ is it?
A:It's ninety-five yuan.
B:That' too _______I am afraid.
A:What about the blue one?It's _________ than the white one.
B:What ________ is it?
A:It's "L" size.
B:Do you _________"M"size?
A:Yes.Here you are.
B:All _______.I'll take it.
1.一个分数的分子是互为倒数的两个数的乘积,分母是最小的素数,这个分数的五分之四是（ ）.
2.一个等腰三角形的底角度数相当于内角和的九分之二,它的顶角是（ ）°,底角是（ ）°.
3.一个数乘以一个分数的积,一定比这个数乘以整数最小 （ ）对或错.
[2]解方程
例：3x-x=12
2x=12
x=6
1.x-十三分之七x=24
2.三分之一x+x=20