Testing new drugs for safety and effectiveness is a costly process in the United States. It also can take:lot of time. Some scientists are now designing silicon computer chips  that act like human organs. The scientists think they have found a way to make the process faster and more economical. The silicon computer chips are smaller than a child's hand. Each one has living cells that act and react like a human organ. The chips are being created as part of a program to test the safety of drug compounds. It is called the Tissue Chip for Drug Screening Program. It is a project of the US National Center for Advancing Tmnslational Sciences, or NCATS. Danilo Tagle is the center's Associate Director. He says a three-dimensional computer chip can be designed to act like a human lung. Some computer chips contain very small models of the human digestive system. They copy the real function or duties of the human stomach and intestine , moving when breaking down food. Drugs are added to the tiny organs for testing through instruments known as micro-tubes. Experiments with the tissue chips have produced more detailed information than tests using animal or cell models. NCATS just announced$17 million in grants to develop an entire human organ system over the next three years. What can we know about the silicon computer chip? A) Its size is like a child's hand. B) .Cells in it can act like human organs C) It is first created by British scientists. D) Its function is more complete than computers.
B

There was once a professor of medicine, who was very strict with his students. Whenever he took the chair on the exam committee, the students would be in fear, because he was seldom pleased with the answers they gave. A student would be lucky enough if he or she could receive a good mark from him. At the end of the term, the students of medicine would take their exam again. Now a student entered the exam room and got seated before the committee. This student was a little nervous as he knew it would not be so easy to get through the exam at all. The professor began to ask. The student was required to describe a certain illness, his description of which turned out to be OK. Then the professor asked about the cure for the illness, and the student, too, answered just as right. "Good," said the professor, "and how much will you give the patient?" "A full spoon," answered the student. "Now you go out and wait for what you can get," said the professor. At the same time the committee discussed carefully the answers the student had given.    Suddenly the student noticed there was something wrong with his last answer. "A full spoon is too much," he thought to himself. Anxiously he entered the room and cried, "Mr. Professor, I've made a mistake! A full spoon is too much for the patient. He can take only five drops. " "I'm sorry, sir," said the professor coldly, "but it's too late. Your patient has died." Which of the following is NOT true according to this text? A) The patient will be in danger if he's taken as much as a full spoon. B) The doctor will be in trouble if he has given the patient a full spoon. C) Since one spoon is more than five drops, the patient will be all right soon after taking one spoon. D) If the patient wants to remain safe, he should take no more than five drops at a time.
C

Long before they became doctors, lawyers, CEO's or real estate developers, they played in garage bands and maybe even dreamed of becoming rock stars. That's why they signed up for Rock 'n' Roll Fantasy Camp. For nearly a week, the mostly middle-aged "campers" had practiced in the West 54th Street studios. They came from as far away as London and Tokyo and as close as Long Island and downtown New York to prepare for their moment of onstage glory. "I feel like I'm 18 again," said Jerry Goldberg, a 60-year-old investment banker and guitar player, whose family was in the audience." I admit that I felt a little uncertain when I first got here, but this has turned out to be a wonderful experience, one of the greatest of my life." Everybody has two businesses, their own business and show business. This can be a life-changing experience for them. Mr. Daltrey, who has appeared at several fantasy camps, was asked why he keeps coming back. "I've had people tell me that I shouldn't be doing this, that it's bad for my image," he acknowledged. "But that's rubbish. Look, it's all so positive, and everybody is having so much fun. So what's bad about that?" Jeff Munger, a drummer and rancher  said. "I'm at a point in my life where I'm going to spend my money on things I'm passionate about, and I'm absolutely crazy about music." Most of the campers are successful executives or professionals: a founder of the Oracle Computer Company, a businessman whose father invented the Big Mac, a plastic surgeon, presidents of health care and seafood companies. We can infer from the text that the campers   _  . A) enjoy their regular jobs B) come from different countries C) do part-time jobs D) have a great many fans
