题目内容

At the first sight the planet Mars(火星)does not appear very welcome to any kind of life. It has very little oxygen and water, the temperature at night is below -50°C and winds of 100 miles per hour cause severe dust storms. However, the surface of the

提问人：宋小玉发布时间：2020-06-22

A．there is no life there now

B．there is a large amount of water at the poles

C．the Mars may be able to support life in the future

D．conditions may have been similar to those on the Earth

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At the first sight the planet Mars(火星)does not appear very welcome to any kind of life. It has very little oxygen and water, the temperature at night is below -50°C and winds of 100 miles per hour cause severe dust storms. However, the surface of the

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