Is there life on Mars(火星)?We do not know.We are sure that earth people like us cannot live on Mars.Earth people need oxygen（氧气）to breathe(呼吸),but there is almost no oxygen on Mars. Living on Mars is like living on a very high mountain. There is little air on it.It is 50℃ about zero at noon and 100℃ below zero at night. Many people think there may be plants on Mars.We know that all plants and animals on the earth need carbon to grow. Through a telesc

孩子，感谢你额，把俺的完型做了。。

我们将有个大78

火星上有生命吗?我们不知道,但是像我们这样的地球人是没办法在火星上生存的,因为地球人需要氧气来供他们呼吸,而火星上几乎没有氧气.生活在火星就像生活在很高很高的山上那儿没有空气,白天中午气温-50℃而晚上午夜气...

Is there life on Mars(火星)?We do not know.We are sure that earth people like us cannot live on Mars.Earth people need oxygen（氧气）to breathe(呼吸),but there is almost no oxygen on Mars.
火星上有生命吗？我们不知道。可以确定的是地球人无法在火星上生存。因为人类要靠氧气来维持呼吸，而火星上几乎没有氧气。
Living on Mars is like living on a very high mountain.
居住在火星上就好比是住在高山顶上。
There is little air on it.It is 50℃ about zero at noon and 100℃ below zero at night. Many people think there may be plants on Mars.We know that all plants and animals on the earth need carbon to grow.
那里几乎没有空气。中午气温高达50摄氏度而夜晚则低达零下100摄氏度。人们猜测火星上可能会有植物。据人类所知，地球上所有的动植物都需要有碳元素才能生长。
Through a telescope(望远镜).Mars looks red.In some places it seems gray.At times the gray color turns gray-green,then brown,then gray again.The gray-green color may be a kind of plant life.It changes color with the seasons.
从望远镜上看，火星是红色的。在一些地方则是灰色的。有时会从灰色变成灰绿色，然后是棕色，接着又变回灰色。那些呈现灰绿色的物体则有可能是某一种植物体，它的颜色随着季节而变化。
Will men go to Mars one day?If they do,they will have to take along their own oxygen,food,clothes and something to sleep in.
将来，人类是否能登上火星？如果能，他们必须得带上氧气，食物，衣服和睡觉的工具。