new-B-Lesson 13

LESSON THIRTEEN Science and TechnologyPart A1. M: Would you like some milk in your coffee?W: Please.Q: What does the woman mean?2. M: Could you help Bob and me plan a surprise party for Meg?W: Sure. What can I do?Q: What does the man want to do?3. W: Let's jog for another mile.M: I'll try. But I'm running out of steam (尤指因疲劳而泄气，失去动力).Q: What do you learn about the man?4. W: Should we call Marcia and tell her about the meeting?M: I'm not sure. It's up to you.Q: What does the man imply?5. M: I can't seem to solve this problem.W: Neither can I.Q: What does the woman say about the problem?6. M: Hey. There's a program on the radio tonight at seven you might like. It's about owls (猫头鹰).W: I hadn't heard about it, but you are right. I am interested.Q: What will the woman probably do?7. W: How long can you keep the video tapes?M: If they're not returned by the time the media center closes tonight, I'll have to pay a fine (付罚金).Q: What information can you get from the conversation?8. W: So you need someone to watch your cat while you're away.M: Would that be a problem for you?Q: What does the man want to know?9. W: Jane told me she would meet me here at the library reference desk at one o'clock, but she hasn't shown up yet.M: Oh, I just saw her upstairs in the third floor study lounge. She said she'd been expecting you at 12:30.Q: What does the man say about Jane?10. W: Could you give this note to Michelle?M: Give it to Michelle? Am I a messenger?Q: What can be inferred from the conversation?11. W: I'm sorry. I forgot to return your physics book last night.M: I'll forgive you, considering the test is on Friday.Q: Why does the woman apologize to the man?12. W: I'm having a lot of trouble with calculus and my professor can't seem to explain it in a way that makes sense to me.M: You know, the student union runs a tutoring service. I was ready to drop trigonometry (三角学) last semester before they helped me out (帮…分担工作，帮…一把).Q: What does the man suggest the woman do?13. M: I see that your roommate Donna is editor of the newspaper this year.W: Editor? Yes. But you'd never know she was my roommate. I’ve hardly seen her since the beginning of the term. She might as well move her bed over to the newspaper office.Q: What can be inferred about Donna?14. W: John, I really can't afford any more interruptions right now. I've got to finish this assignment.M: I'm sorry, Cathy. Just one more thing. I forgot to ask if you could give me a ride to school tomorrow.Q: What can be inferred about the man?15. W: I'm really disappointed about not getting that job.M: An evening at the jazz club ought to make you feel better.Q: What does the man suggest the woman do?Part BPassage I; Cloning Mount Vernon’s TreesTree experts have begun an effort to rebuild forests near the home of America’s first president, George Washington. Earlier this month, workers gathered buds from tall, old trees on the grounds of George Washington’s home, Mount Vernon. It is in the state of Virginia, near Washington, D.C. The experts hope to produce genetic copies, or clones, of the trees and plant them on the property.Tree experts David milarch and his son, Jared, are leading the efforts. As a special project, David and Jared Milarch offered to make clones of the thirteen oldest trees at Mount Vernon. They are huge, beautiful trees. George Washinton superivised the planting of these trees more than two hundred years ago.The Milarch family plans to grow fifty copies of each tree in tree nurseries in Alabama and Oregon. They will return the trees to be planted at Mount Vernon in two years. Some copies of thetrees will be sent to the Arnold Arboretum at Harvard Univerisity in Cambridge, Massachusetts for safe keeping.Grafting is the name of the process used to clone trees. It has been done for thousands of years. A method called the T-bud technique often is used to copy trees. Workers begin by cutting the bark, or covering , on the side of a young tree. The cut is made in the shape of a cross, or the letter T. Next, the workers find a bud, or small growth, on te tree to be copied. A small piece of wood under the bud is carefully removed from the tree. The bud is then put into the hole on the other tree. The bud is tightly tied in place and begins to grow.Mount Vernon officials say George Washington was interested in his tree collection. The officials add that he was a strong environmentalist. They say the old trees are important because they existed when America’s first president was alive.Exercise i:1. Where was Geroge washington’s home located?2. what are David Milarch and his son?3. Where does Davic Milarch plan to clone the thirteen oldest trees?4. Which of the following is NOT true about cloning trees?5. Why are the old trees at Mount Vernon important?Exercise ii:1) cutting the bark 2) young tree 3) find a bud 4) to be copied5) removed from the tree 6) put into the hole 7) tightly tied 8) to growPassage II. Dinosaur NosesAn American scientist named Lawrence Witmer, of Ohio University, has found that many images of dinosaurs may be wrong. For years, pictures of the ancient creatures have shown their nose openings near the top of the head. The new study suggests the dinosaurs’ nostrils were just above the mouth. Dinosaurs used their nostrils to breathe, smell and control their body temperature. The new theory could help explain how the huge creatures were able to survive by using their sense of smell to find food, a mate and possible enemies.Many of the early dinosaur remains recovered by scientists were from huge creatures called sauropods. Scientists believedtaht sauropods must have lived in water because their boides were so huge and their necks were so long. Nostrils high on the head would have permitted the dinosaurs to breathe while partly under water. The idscovery of a sauropod head bone in 1884 added support for this belief. The skull had a large hole at the top of the head.Professor Witmer says experts learned years later that sauropods generally were not sea creatures. But he says the earlier thiory about nostril position was extended to other dinosaurs.Only dinosaur bones have survived as fossil remains. Scientists have never recovered dinosaur remains of soft tissue. Scientists interested in the physical appearance of dinosaurs often study birds and animals similar to the ancient creatures. Professor Witmer examined forty-five kinds of birds, crocodiles and lizards that are the closest living relatives to dinosaurs. He noted the placement of soft tissue through hundreds of X-ray images and by cutting pieces of tissue. Soft tissue leaves markings on bone. Professor Witmer used this information to make a map of the likelyposition of soft tissue in the dinosaurs’ noses. He found that the birds and reptiles he studied share a common nostril position.Professor Witmer found that the hole scientists once thought was a nostril in idnosaurs is just one part of the larger nasal passage. He found that the nostrils were farther forward and closer to the mouth. He says this new nostril position was true for all dinosaurs.Exercise i:1. What does the speaker mainly talk about?2. What did dinosaur use their nostrils to do?3. Which of the following have/has survived as fossil remains?4. How many kinds of creatures did Professor Witmer examine in his studies?5. What does Professor Witmer conclude based on his studies?Exercise ii:1. help explain; by using their sense of smell2. dinosaur remains; huge creatures3. sea creatures4. the physical appearance; birds and animals5. the hole; the larger nasal passagePart D: The Seventy-fourth Annual Academy Awards1)director, 2)magic, 3)screen, 4)theatre, 5)with, 6)Canada,7)life, 8)existence, 9)astronaut, 10)actor, 11)lifesaver, 12)celebrate,13)magic, 14)winners, 15)campaign, 16)black, 17)negative, 18)celebrate,19)prepare, 20)explain。