Rob LudacerDavid Anderson
How Long Can You Survive in Space Without a Suit? If you’ve seen sci-fi movies in space, you may be familiar with the scenes exposing people to the endless vacuum of space. Pop culture tells us that this never ends well. We see people freezing solid immediately, exploding and swelling ...
第2部分:在轨生活 Life in Orbit Kevin explores life in orbit on board the Station. As Tim settles in to his new home he sends speCIAl reports about what it takes to live and work in space. Four hundred kilometres above the Earth, hurtling at a speed of 17,500mph, astronauts’ bones a...
There are consequences of living big. As middle-class houses have grown larger, two things have happened. First, large houses take time to maintain, so cleaners and other low-wage service workers are required to keep thes...
people wonder if certain crops and foodstuffs could disappear like some animal species due to climate change. 41. although farms in the us can move a bit northward, crop yields may decrease. 42. one possible solution ...
Howard McCurdy, an expert on space policy at American University, said it was not all marital bliss at the ISS. "It is like a divorced couple trying to live in the same house," he said. "You can do it, it is just not very easy. They both own the house. They both operate the ...
Will we someday colonize space? Will our children visit other planets? To achieve goals like these, we’ll need to crack one crucial challenge: how to feed ourselves for long periods away from Earth.
For future humans to survive long periods on Mars, growing food on the planet is a must.为了让未来的人类在火星上长期生存,在地球上种植食物是必须的。 It would be too costly and risky to rely upon rocket deliveries to meet the food needs of colonists.依靠火箭运送来满足殖民者的食物需求成本太...
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Directions: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), ...