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回答问题
sharks have been on the earth for of years.t
1年前1个回答
Sharks have been in the earth for
英语翻译Volcanoes have been erupting on the earth for millions o
1年前3个回答
Sea turtles have been on Earth for millions of years, but th
sharks have been around for a very long time.这句话中为什么有around?
1年前6个回答
Sharks are among the oldest animals on Earth. There are hund
For most of the earth's history they have been the only form
1年前4个回答
Scientists think that there has been life on Earth for
Turtles and tortoises have been on planet Earth even before
1年前2个回答
dinosaurs have been completely died out on the earth,never (
1年前7个回答
Scientists think that there has been life on Earth for milli
Scientists think there has been life on Earth for millions o
scientists think that there has been life on earth for milli
scientists think that there has been life on Earth for milli
新概念3册55课For most of the earth's history they have been the o
英语翻译Scientists think that there has been life on Earth for m
你能帮帮他们吗
NaHCO3会和NaOH反应?
1.解下列方程 (1)36的平方-1=0; (2)4x的平方=81; (3)(x+5)的平方=25
she lives with her father怎么改为否定句
为什么尿液尿素比原尿和血浆的多
（2011•石家庄一模）（A选做） 宇航员登上某一星球并在该星球表面做实验，用一根不可伸缩的轻绳跨过轻质定滑轮
精彩回答
我国东北主要的粮食作物是 （ ）
按一定的规律重新排列。 山海关、长城、中国、世界、亚洲
选出不同类的单词（ ） A . thirtieth B . twenty C . twelfth
已知二次函数y=a x^2+bx+c的图象经过A（-1，0）、B（3，0）、C（0，3）三点，求这个二次函数的解析式
两个数的差是10,如果被减数增加5,减数减少5,这是它们的差是（ ）
