The Earth is big. There are rocks(岩石)on the Earth. Ther
e is soil(土壤) on the Earth. There is water on the Earth.[来源:美高梅正规网址ZXXK]
Look at the
people on the Earth. Do they float(漂浮) on the Earth? Jump. You come down to the ground. Jump up again. You come down again. You always come down to the grou
The Earth pulls things down. The pull of the Earth is gravity(引力).
( )1.The Earth is .
big B. wide
l D. short[来源:Z# [来自e网通客户端]