题目

阅读理解 In July 2021, astronauts on board the International Space Station (ISS) planted pepper seeds as part of an experiment to test which plants could be successfully grown in space. The peppers were harvested four months later, and the team celebrated with a party and taste test. For astronauts living mostly off prepackaged foods for months at a time on the ISS, fresh and flavourful produce is welcomed. With long missions to the Moon and Mars in focus, NASA is working to find sustainable ways for astronauts to enjoy fresh foods, which will add key nutrients to their diets and improve their state of mind. Astronauts have grown radishes, zinnias and a variety of lettuces on board the ISS before, but this is the first time they grew peppers, which posed a new challenge, reports Elizabeth Howell for Space. com. Biologists at the Kennedy Space Centre spent two years picking the perfect pepper. They wanted to try peppers because they're a great source of vitamins and nutrients, and they can be eaten raw or cooked. Plus, peppers are fairly low maintenance(保养)to grow. In June, a carrier delivered supplies to the ISS along with a package of 48 pepper seeds. Astronauts on board planted the seeds in a microwave oven-sized growing container. The conditions in it—such as lighting, watering and air circulation—were controlled by a crew based at the Kennedy Space Centre. On board, the astronauts collected data and offered feedback on the flavour of the peppers. "This is important because the food astronauts eat needs to be as good as the rest of their equipment, "LaShelle Spencer, a plant scientist at NASA, said over the summer. "To successfully send people to Mars and bring them back to Earth, we will not only require the most nutritious foods, but the best tasting ones as well. " （1） Why did astronauts attempt to plant pepper in space? A . Only pepper can grow in space. B . There were no enough food for astronauts. C . Humans wanted to test which plants can grow in space. D . Pepper can grow better than other plants. （2） What special benefits does pepper have compared with other plants? A . Its nutrients are the highest. B . It needn't too much later care. C . It improves their state of mind most. D . The vitamins in it are the most. （3） What does the underlined word "it" refer to in paragraph 5? A . Container. B . Package. C . Microwave. D . Seed. （4） What can we infer from the text? A . Astronaut need special nutrition to keep the best state of mind. B . The idea that pepper is grown in space is silly. C . It is the carrier that is in charge of sending feedback on the peppers. D . Pepper can't be eaten cooked in space but it can be eaten raw. 答案： C B A A

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