问题补充：
For a long time, humans have used technology (科技) to study the world around us, and Mars is the latest place we’re using machines to explore. Besides the earth, the “red planet” is seen, as the one place in our solar system most likely to have life.
Early last month, the first American robot, Spirit, landed on Mars without any problem. Opportunity, the second robot, landed on the planet more than a week ago. Scientists are very excited about these machines’ safe landing on Mars. It means that now we have an excellent chance to look for water and other signs of life. So far, the robots have found some stones that could show Mars was once a wet and warm planet.
But the trips made by Spirit and Opportunity were dangerous. Mars is often called the “death planet”, because in the past its environment has been unfriendly to the robot explorers. Before Spirit and Opportunity, nearly forty spaceships had been sent to Mars since the 1960s. Two-thirds of them failed. The first spaceship, Korabl, sent in 1962 by Russia was among them. It broke apart (分裂) near the earth.
【小题1】For a long time humans think .A．they can surely find life on MarsB．there may be life on MarsC．it’s too late for them to explore Mars nowD．Mars is the only planet that has life on it【小题2】The two robots .A．have found out that it is warm and wet on MarsB．were sent to Mars to find some stonesC．were the first two American robots that landed on MarsD．are the only machines that have landed on Mars so far【小题3】The third paragraph mainly tell us .A．it’s a very hard and dangerous trip for spaceships to MarsB．two-thirds of the spaceships sent to Mars have failedC．Spirit and Opportunity landed on Mars successfullyD．Mars is called the “death planet”B
答案：
(答案→)B
解析：本文主要介绍了很长一段时间,人们都在利用科技来研究我们周围的世界,而火星就是一个最新的地方。我们正在用机器探索。除了地球，火星被看作是太阳系中最有可能存在生命的地方。火星被叫做死星，因为在过去，环境对于机器人探索者不友好。
【小题1】细节理解题。根据Besides the earth, the “red planet” is seen, as the one place in our solar system most likely to have life. 除了地球之外，“红色星球”被视为一个在我们的太阳系中最有可能有生命的地方。故选B。
【小题2】细节理解题。根据Early last month, the first American robot, Spirit, landed on Mars without any problem. Opportunity, the second robot, landed on the planet more than a week ago. 上个月，第一个美国机器人，精神，成功在火星上着陆。第二个机器人在一个多星期前就已经到达那个星球。可知故选C。
【小题3】细节理解题。根据最后一段But the trips made by Spirit and Opportunity were dangerous.两次机器人旅行是危险的。故选A。
