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中考趋势 Ⅳ.信息还原(每小题2分,共10分)
从方框中选出能填入空白处的最佳选项。选项中有两项多余。
Future astronauts could potentially depend on food made from bacteria(细菌) that feed on minor planets, to produce a kind of yogurt. While astronauts on the International Space Station have experimented(实验) with growing salad leaves, the vast majority of food consumed in space is transported from the Earth. 1 That's why Joshua Pearce at Western University in Ontario, Canada, decided to try using bacteria to change carbon-containing(含碳的) materials from minor planets into eatable food.
This process has not been carried out yet on real minor planets. But Pearce's team has performed similar experiments using bacteria to
break down plastic from leftover(吃剩的食物) in army food supply bags. 2 The collective bacteria end up looking something like a brown milkshake and the team has also experimented with drying out this material to produce something like yogurt or even a powder.
3 "We did nutritional(营养的) research and it turned out to be almost a perfect food," he said. "It turned out that the bacteria mixture that we were using, more or less, has a third each for the three major nutrients people need."
"If the idea is sound, a 500-metre-wide minor planet similar to Bennu, which NASA visited in 2020, could feed between 600 and 17,000 astronauts for a year," said Pearce. 4
A fully working minor planets food project would require an "industrial-sized smart machine" in space. This would take a long time to get everything in place. 5 They plan to start off with coal and then move to space rocks that have fallen to the Earth.
1.
2.
3.
4.
5.
从方框中选出能填入空白处的最佳选项。选项中有两项多余。
Future astronauts could potentially depend on food made from bacteria(细菌) that feed on minor planets, to produce a kind of yogurt. While astronauts on the International Space Station have experimented(实验) with growing salad leaves, the vast majority of food consumed in space is transported from the Earth. 1 That's why Joshua Pearce at Western University in Ontario, Canada, decided to try using bacteria to change carbon-containing(含碳的) materials from minor planets into eatable food.
This process has not been carried out yet on real minor planets. But Pearce's team has performed similar experiments using bacteria to
break down plastic from leftover(吃剩的食物) in army food supply bags. 2 The collective bacteria end up looking something like a brown milkshake and the team has also experimented with drying out this material to produce something like yogurt or even a powder.
3 "We did nutritional(营养的) research and it turned out to be almost a perfect food," he said. "It turned out that the bacteria mixture that we were using, more or less, has a third each for the three major nutrients people need."
"If the idea is sound, a 500-metre-wide minor planet similar to Bennu, which NASA visited in 2020, could feed between 600 and 17,000 astronauts for a year," said Pearce. 4
A fully working minor planets food project would require an "industrial-sized smart machine" in space. This would take a long time to get everything in place. 5 They plan to start off with coal and then move to space rocks that have fallen to the Earth.
1.
2.
3.
4.
5.
答案
1.A 2.E 3.D 4.G 5.B
【文章大意】本文是一篇说明文。文章探讨了一种未来宇航员可能在太空中获取食物的新方法：利用细菌将小行星中的含碳物质转化为可食用的食物，类似于酸奶或粉末。如果成功，这种方法可以在小行星上大规模生产食物，为未来的太空探索提供支持。
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【文章大意】本文是一篇说明文。文章探讨了一种未来宇航员可能在太空中获取食物的新方法：利用细菌将小行星中的含碳物质转化为可食用的食物，类似于酸奶或粉末。如果成功，这种方法可以在小行星上大规模生产食物，为未来的太空探索提供支持。
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