Have you ever dreamed of visiting a planet in the Milky Way? While the trip sounds exciting, it would take years and years to reach the place that we are going to. So in the future, bedtime for astronauts may be more than a few hours of regular shut-eye. They would have to sleep for years. European researchers are now doing hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. "If there was an effective technology, it could make deep-space travel come true," said Mark Ayer of the European Space Agency last month. What seems like science fiction is not completely impossible. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don't age. They have now moved on to small, non-hibernating mammals like rats. The results will be out soon. A major challenge is the fact that cells can be very simple systems, but body organs are far more complex . "It's like moving from a simple Apple computer to a supercomputer," said Marco Biggiogera, a hibernation researcher at Italy's University of Pavia. Just like bears and frogs, the hibernation of human beings would cause a person's metabolism   to lower so they would need less energy. Medical research, however, is just half of a space flight hibernation system. There is the challenge of designing a suitable protective place to live. Such a place would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor   life functions and serve the physiological needs of the hibernator. According to Ayer, the six-person Human Outer Planets Exploration Mission to Jupiter's moon   Callisto, could be an opportunity to use human hibernation. The mission aims to send six humans on a five-year flight to Callisto, where they will spend 30 days, in 2045. , . In a hibernating situation, a person needs   _  . A) less sleep B) more food C) less energy D) more movement
C
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This is a picture of Mr. Li's family. The man in the middle is Mr. Li. The woman is Mrs. Li's wife. They have two sons. The child behind Mr. Li is Li Lei. He's thirteen. The boy in front of Mrs. Li is Li Ming. He is seven. Li Lei and Li Ming are in the same school, but not in the same grade. Li Lei is in Grade Two. Li Ming is in Grade One. They are good students. How old is Li Ming? He is    _  . A) seven B) twelve C) ten D) thirteen
A
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As one of Hollywood's all-time greatest actress, Audrey Hepburn is famous all over the world. When Hepburn died in 1993, the world mourned the loss of a great beauty, a great actress and a great humanitarian. Born in Belgium on 4th May 1929, Hepburn dreamed of becoming a successful ballet dancer. She had also been a model before she entered the film industry. In 1951, while acting in Monte Carlo Baby, Hepburn met the famous French writer Colette, who was attracted by Hepburn's beauty and charm. She insisted that Hepburn was the perfect girl to play the lead role in Gigi, a play based on her novel. That event marked the beginning of Hepburn's successful career. Shortly after, Hepburn was chosen to play the lead role of a young princess in the Hollywood film Roman Holiday. It was a big success and earned her an Oscar for Best Actress. She also won a Tony Award for the play Ondine.[:..] During her lifetime, Hepburn earned four more Oscar nominations. In 1989, she made her final appearance in her last film Always and played the role of an angel. Throughout her acting years, she acted in only one TV series, Gardens of the world with Audrey Hepburn. By showing us the beauty of nature, Hepburn wanted to remind us that we should protect the environment. Hepburn is remembered not just as a great actress, but also as a great humanitarian. She was honoured with a number of awards because of her efforts in her charity work. In 1992, the President of the United States presented her with the Presidential Medal of Freedom. In 1991, Hepburn discovered that she had cancer. In 1993, at the age of 63, she passed away peacefully in her sleep. People remember Hepburn not only as a great actress but also as   _   . A) a kind lady B) a brave lady C) a wise lady D) an attractive lady
A
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People in different places eat different things. In South China people like to eat rice. Sometimes they eat it twice or three times a day. They usually eat it with fish, meat and vegetables. It tastes very delicious. Japanese like to eat rice, too. They also eat a lot of fish. Sometimes they eat raw   fish.It sounds strange but smells very fresh. In western countries like Britain, Australia and the USA, the most important food is bread or potatoes. People usually make their bread at home. And they cook potatoes in different ways. In England the most popular food is fish and chips. Sometimes people eat this food at home, in their workplace, in the park or even on the street. People call it "takeaway" food. In China today,there are also much"takeaway"food,and most children like to eat them. The passage mainly talks about   _  . A) food B) animals C) vegetables D) fruit

A
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