Read the article and select the best answer. Article: A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct species. The discovery was made by researchers at York and Harvard Universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants -- the Asian elephant, African forest elephant, and African savanna elephant. Once they obtained DNA sequences from two fossils , mammoths,and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths. The scientists used detailed genetic analysis to prove that the African savanna elephant and the African forest elephant have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists. There has long been debate in the scientific community that the two might be separate species, but this is the most convincing scientific evidence so far that they are indeed different species. Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species, despite the elephants' significant size differences. The savanna elephant has an average shoulder height of 3.5 metres while the forest elephant has an average shoulder height of 2.5 metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However the proof lay in the analysis of the DNA. Alfred Roca, assistant professor in the Department of Animal Sciences at the University of Illinois, said, "We now have to treat the forest and savanna elephants as two different units for conservation purposes. Since 1950,all African elephants... Question: One of the fossils studied by the researchers is that of _ . Options: A: the Asian elephant B: the forest elephant C: the savanna elephant D: the mastodon elephant
D

Read the article and select the best answer. Article: Have you ever dreamed of visiting a planet in the Milk Way? While the trip sounds exciting, it would take years and years to reach your destination. 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 conducting 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 a reality," said Mark Ayre of the European Space Agency last month. _ 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 by the end of 2004. A major challenge is the fact that cells can be very simple systems, whereas 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 shelter. Such a shelter 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 Ayre, 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. Question: What's the best title for the passage? Options: A: Six humans to fly to Callisto B: Human hibernation improves health C: Space travel attracts people D: Deep sleep for deep space travel
D

Q: Read the article and select the best answer. Article: Marie Curie, born in Sklodovka, Poland in 1876, led a hard life as a girl. Her parents, both teachers, had small salaries and were quite poor, especially after her mother stopped teaching to raise five children and take care of her poor health. Marie's mother suffered from tuberculosis and died of it when Marie was ten. When Marie was small, she showed great interest in science. She loved to study and hoped to become a scientist when she grew up. Her parents encouraged her interest in science. Excellent as she was in her studies, she couldn't go on with the advanced education she needed because Poland was then ruled by Russia and women were not permitted to go to college. In order to continue her education, she smoothed away many difficulties and entered Paris University. she lived a simple life and studied hard, so she graduated with the highest grades in her class. After graduation, she was engaged in scientific research in Paris University. There she met Pierre Curie, whom she married later. Pierre joined her in her research into an unknown phenomenon radiation, which a certain scientist had declared the uranium gave off. The Curies spent several years trying their best to find the element that produced radiation. Finally they succeeded in 1902. Marie Curie won two Nobel Prizes, one for physics in 1906, together with her husband and another scientist who had also contributed to the research, the other for chemistry herself in 1911.Marie Curie was a scientist of great achievement, and the first woman ever to be honoured in the Nobel Prize history. Question: The best title for the passage is _ . Options: A: A Brief Account of Madam Curie B: Madam Curie and Radium C: Madam Curie's Childhood D: Madam Curie's Science Interest
A: A

*Question*
Read the article and select the best answer. Article: A campaign is being launched to encourage children to _ 30 minutes of screen time a day to head for the great outdoors. The newly formed Wild Network--a collaboration of nearly 400 organizations--is attempting to attract youngsters away from television and computer screen and to fields, woods and parks. Members of the network include the National Trust, RSPB, Play England and the NHS. Organizers say it is the UK's biggest ever campaign to reconnect children with nature and outdoor play, and claim it could help improve fitness, mental alertness and general wellbeing. A documentary film, Project Wild Thing, will forecast the launch at more than 50 cinemas across the UK from Friday. It looks at the increasing link between children and nature. Andy Simpson, chairman of the Wild Network, said, "The tragic truth is that kids have lost touch with nature and the outdoors in just one generation. Time spent outdoors is down, roaming ranges have fallen largely, activity levels are declining and the ability to identify common species has been lost." Suggestions of how to get more time in nature include collecting conkers , camping or snail racing, and observing autumn colour on trees. From January, the network will aim to make suggestions to politicians on how government can do more to get children muddy and bright-eyed. This is not the first time the message of less screen, more play has been brought up. Children in the 1980s were requested to do the same by the BBC TV series Why Don't You, which somewhat confusingly called on its viewers to "switch off your TV set and go to do something less boring instead". Question: According to the passage, which of the following statements is NOT true? Options: A: The outdoors can be beneficial to children's wellbeing. B: The Network advocates keeping children's distance from TV. C: It is the first time for less screen, more play to be brought up. D: The government should do more to get children to go outdoors.
**Answer**
C