求高人帮我解决1篇英语首字母填空.Since t_ of millions of years the moonhas been to going around Earth.A__ that time the moon was the only satellites of E__.Today the earth has many other satellites(卫星）.All of them are made by man.
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求高人帮我解决1篇英语首字母填空.Since t_ of millions of years the moonhas been to going around Earth.A__ that time the moon was the only satellites of E__.Today the earth has many other satellites(卫星）.All of them are made by man.
求高人帮我解决1篇英语首字母填空
.Since t_ of millions of years the moonhas been to going around Earth.A__ that time the moon was the only satellites of E__.Today the earth has many other satellites(卫星）.All of them are made by man.These man-made satellites are m_ smaller than the moon .Some of them will still go round the earth thousands of years .
Man-made satellites don't f__ because they are going too fast to do s__.The pull of the earth k__ them from doing this .As a result,they travel in an orbit（轨道） round the earth .
If a man-made satellite travels about a certain height,it can keep g__ round the atmosphere,and there is n__ to slow it down .If it travels lower than that ,it will be s__ down so much that it will fall to the earth.
求高人帮我解决1篇英语首字母填空.Since t_ of millions of years the moonhas been to going around Earth.A__ that time the moon was the only satellites of E__.Today the earth has many other satellites(卫星）.All of them are made by man.
thousands
At
Earth
much
fall
so
keeps
going
nothing
slowed
thousands
At
Earth
more
fall
so
keeps
going
nothing
slowed
hundreds(月亮的年龄为46亿）
At
Earth
much
fall
so
keeps
going
nothing
slowed