【正文】
rue about the writer? A. He is very old now. B. He is in good health. C. He prefers driving a car. D. He lives in the city now. 23. In the passage, the writer tries to _______. A. express his opinions about way of life his life in the countryside C. show an interest in the outside world D. persuade the reader to live in the city 24. How is the passage mainly developed? A. By inferring B. By paring C. By listing examples D. By giving explanations B Have you seen Jurassic Park? In this film, scientists use DNA kept for tens of millions of years to clone dinosaurs. They find trouble, however, when they realize that the cloned creatures are smarter and more dangerous than expected. That’s nothing more than a fiction. But could we really clone endangered animals? To date, the most successful attempt to do so was the cloning of a gaur, a rare oxlike animal from southeast Asia. Scientists used a cow to bring the cloned baby gaur, named Noah. Two days after birth, however, Noah died from a mon bacterial infection. Other endangered species that may be cloned include the African bongo antelope (邦戈羚羊 ), the Sumatran tiger, the cheetah (獵豹 ), and the giant panda. Next, could we really clone extinct animals? In theory? Yes. To do this, you need a wellkept source of DNA from the extinct animals such as wool mammoth (毛象 ), Tasmanian tiger, or even dinosaur, and a closely related species, still living, which could serve as a surrogate mother. In reality? Probably not. On the one hand, it’s not likely that extinct animals’ DNA could survive undamaged for such a long time. Cloning extinct animals as wool mammoth, Tasmanian tiger, or dinosaur is much more difficult due to the lack of properly wellpreserved DNA. On the other hand, for example, a gaur can have a cow as a surrogate mother, definitely not a monkey. But what about an extinct animals as unique as the panda? What species could possibly serve as a surrogate mother? Cloning presents many exciting possibilities. However, even if extinct animals are brought back, they could not survive in today’s world. Not only do most extinct animals have no habitat to love in, but the other plants and animals they depended on for food may also be gone as well. 25. It can be learned from the text that ________. A. scientists have cloned the African bongo antelope B. both the cheetah and the giant panda live in Asia C. the gaur lives in Asia and is endangered D. the gaur is an extinct species 26. The underlined words “a surrogate mother” probably refer to a female who ______. A. contributes its eggs to another female B. gives birth to a baby for another female C. gives birth to a baby of its own D. cannot give birth to a baby 27. The difficulty in cloning an extinct species is the lack of ______. A. both the wellpreserved DNA and plants to live on B. both the habitat to live in and the wellpreserved DNA C. both habitat to live in and plants to live on D. both the wellpreserved DNA and a surrogate mother 28. In the author’s opinion, it is possible that ______. A. some extinct species may be cloned, but not survive B. extinct species may be cloned and easily survive C. a gaur can have a monkey as a surrogate mother D. all the extinct species may be cloned C Bayfield Shopping Coupons(贈(zèng)券 ) 1. Six Hours Free Parking If you spend $100 or more in our stores you will receive six hours of free parking. When you have spent $100 or more, just take this coupon and your receipt to the customer service desk on lever 4. They will stamp your parking ticket to allow 6 hours of free parking. Offer here until November 14. 2. Win a $1,000 CD Collection Win your choice of $1,000 worth of CDs from JB Music Store. Just buy any two CDs and your name will go into the petition. Select your own prize from our wide variety of rock, pop, jazz, and classical music. Competition ends November 14. Prize drawn on November 21. Check store for more information. 3. Buy One, Get One Free Buy one shirt or tie at Deniel’s Menswear, and get another shirt or tie of the same value free. Choose from any of our dress shirts and we will give you another one at no cost. Hurry! Offer ends November 14. Offer limited to one per customer. 4. 10% Off Present this coupon