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Which might be the gist of text “At Home on Mars”?
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The following sentence is the first sentence of a summary of paragraphs A-D. Please choose three other sentences to complete the summary of “At Home on Mars”.If we want to live on Mars someday, we will have to change it so it is similar to Earth.
Choose words from the article to complete this summary.Mars as a planet is not 1________. There is not enough oxygen to breathe. There is no 2________, just ice, and it can get very cold there. Some scientists, however, believe Mars can be terraformed. Perhaps factories could be built to increase the levels of 3_______. This would change the atmosphere on Mars. But terraforming Mars would take many centuries and would be expensive.The first step would be to send 4_________ missions there. Then homes could be built. Enormous 5__________ would be required, first for plants, then for people. Perhaps 6_______ or wind turbines could be used for power. But even after 1,000 years, people might need to wear equipment similar to 7________ in order to breathe.
大学版Nao机器人具有（）个自由度。
大学版Nao机器人的闪存是（）GB。
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