There are no signs of little green men on Mars.But new discoveries offer a bit more hope that some forms of life existed there in the past-and perhaps is still there at present.Methane (甲烷) and water have been found on the red planet.They both show the possibility of life.According ...
"I'm equally as fascinated by the idea that life never got started on Mars in the first place. That's a harder question to address scientifically, but I think that we need to give the search for life on Mars due diligence. We need to go to places that we think are the most likely...
New Evidence for Life on MarsReuters
【原创】There are no signs of little green men on Mars. But new discoveries offer a bit more hope that some form of life existed there in the past --- and perhaps is still there in the present. Methane gas(甲烷) and water have been found on the Red Plane. The presence of both sug...
By the time we reach Mars, scientists here on Earth ___ a lot of new discoveries. A. will have made B. will make C. make D. made 相关知识点: 试题来源: 解析 A。“by the time + 一般现在时”,主句用将来完成时。这里“by the time we reach Mars”表示到我们到达火星的时候,地球上的...
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Some astronomers spend their entire careers looking for new discoveries in space, but a 10-year-old Canadian girl found one on her first try. In January, 2011, Kathryn Gray, who often studied stars, was looking at recent pictures of outer space and comparing them to pictures taken years ear...
【题目】【原创】There are no signs of little green men on Mars. But new discoveries offer a bit more hope that some form of life existed there in the past --- and perhaps is still there in the present. Methane gas(甲烷) and water have been found on the Red Plane. The presence of...
【题目】Discovered by AmateursSome astronomers spend their entire careers looking for new discoveries in space , but a 10-year-old Canadian girl found one on her first try.In January, 2011 , Kathryn Gray,who often studied stars , was looking at recent pictures of outer space and comparing ...