Imagine looking for your lost dog. You step into a cave . But instead of the dog, you find beautiful cave paintings. You see paintings of horses, deer, and bison that are drawn in black, brown, red and yellow. Your first question would probably be "Who did this?" This is what happened to four French boys in 1940. They found the Lascaux caves. The paintings the boys discovered in those caves are 17,000 years old. They were drawn by the ancient people called Cro-Magnons. Cro-Magnons looked much like people of today. They used tools, such as fishing nets. But their art was extremely good. The main cave at Lascaux is called the Great Hall of Bulls, which has a picture of bulls and horses in many colors. The largest animal is 18 feet long. There are smaller animals, such as bison, stags  and a bear. There is also a strange spotted two-horned   animal. To the left of the main cave are the most famous paintings that are the drawings of multicolored animals. One painting is called Little Horses. On the ceiling are horses and cows. The most unusual sight may be in the Shaft of the Dead Man where there is a thinoceros  , a carefully drawn dead man, a wounded bison and a bird. Why did Cro-Magnon artists do these beautiful drawings on cave walls? Did the drawings call upon some magical power? Did the Cro-Magnon people hope that the drawings would bring good luck? There is one thing the paintings seem to tell us. The Cro- Magnons were interested in the world. They looked at beauty and they understood it. Most of the drawings in the caves are about   _  . A) boys B) tools C) dead men D) animals
D
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For more than twenty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships traveling through space, on the chance that someone may be receptive to such messages. Scientists are using powerful radio telescopes to listen to signals from about 1, 000 stars, all within 100 light years of earth. In addition, they will scan the entire sky to "listen" for radio messages from more distant stars. Using a computer, they will be able to _ more than eight channels at one time. Scientists are looking for any signal they stands out from the background noise. Of the 200 billion stars in the Milky Way galaxy, scientists find that five percent are like our sun. Perhaps half of them have a planet like earth. Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution of life. Based on the inhabitable(that can be lived in)planets in our galaxy, most scientists agree that chances are likely that one or more of these planets support some life. However, many scientists wonder whether intelligent life exists on other planets. Some believe that twenty years of searching without any intelligible messages shows that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely. Other scientists believe that our search hasn't been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time, some scientists think it is likely that civilization much more advanced than ours have developed. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.[ According to the passage, how many planets in our galaxy might be inhabitable? A) 5 billion. B) 10 billion. C) 15 billion. D) 200 billion
A
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The addictive pull of Internet shopping is dragging thousands of victims into a rise of debt, including thousands of women who have run up huge credit card bills they cannot repay.  The appeal of 24-hour access and the explosion in goods and services on offer has seen a 10 percent increase in credit card debts in the UK this year.  Much of it has accounted for online spending. The latest report on Internet usage shows the number of adults logging on at home has risen from 10 million in October last year to 15.5m this month.  The report by Continental Research, which has monitored Internet access in the UK for the past six years, found that while online shopping used to be experimental it is now becoming habitual, especially for women.  Colin Shaddick, who heads the company, said, "Women are logging on in record numbers ---online shopping has certainly played a big role in this." The study found that average annual spending online is PS700 a year for each Internet shopper.  The draw of the Internet is especially strong for collectors. Business lecturer Stephen Hall, who has been buying and selling books since he was a child, now has a collection worth PS40,000.  He is passionate about the opportunities offered by shopping online. "You can find a book in minutes that you could spend months hunting down at auctions or second-hand bookshops," he said. "It can easily become addictive, and all the collectors I know use the Internet. I suspect you do waste money because you are less likely to send back a book to Little Rock, Arkansas, than take it back to the high-street shop." Like Stephen Hall, most of us can shop online sensibly---but for some it provides an easy, anonymous and accessible way to feed their habit. It also provides secrecy---a central part of any addiction. Dr Samantha Haslett, a psychologist and expert in addiction at the Promos counseling centre, said, "It's compulsive in the same way as alcohol and gambling, and addicts find themselves completely unable to stop themselves, despite debt mounting... It can be learned from the passage that  _  . A) people have run into debts mainly because of their Internet shopping addiction B) many people don't tend to get back their refund though the goods quality is poor C) avoiding been noticed by the public entirely leads to Serena's shopping addiction D) the reason for online shopping results from much less credit fraud on the Internet
B
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Full face transplants are no longer science fiction fantasy, a leading surgeon has said, adding that they are technically feasible but ethically complex.        Peter Butler from London's Royal Free Hospital called for a debate on the ethics of such an operation made possible by new drugs whichstop the body's immune system rejecting a transplanted face. "It is not 'Can we do it?' but 'Should we do it?'" he told the BBC."The technical part is not complex, but I don't think that's going to be the very great difficulty. The ethical and moral debate is obviously going to have to take place before the first facial transplantation."       The British Association of Plastic Surgeons will discuss the microsurgical procedure  , which could give new skin, bone, noses, chin, lips and ears from  _ donors to patients disfigured by accidents, burns or cancer. But surgeons could have trouble finding enough willing donors. prefix = st1 /Butlersaid his survey of doctors, nurses and members of the public showed most would accept a face transplant but few were willing to donate their own after dying.        Despite a number of ethical concerns, Christine Piff, who founded the charity Let's Face It after suffering a rare facial cancer 25 years ago, welcomed the possibility of face transplants. She rejected the idea that the procedure would mean people would end up living with a dead person's face. "There are so many people without faces, I have half a face... but we are all so much more than just a face... you don't take on their personality. You are still you," she told reporters. "If we can donate other organs of the body, then why not the face? I can't see anything wrong with it." What would be the best title for the text? A) The First Facial Transplantation B) Debate on the Ethics of Face Transplants C) Face Transplants--No Longer Science Fantasy D) Let's Face It

C
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