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 ox-like 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 common bacterial infection. Other endangered species that may be cloned include the African bongo antelope  , the Sumatran tiger, the cheetah  , and the giant panda. Next, could we really clone extinct animals? In theory? Yes. To do this, you need a well-kept source of DNA from the extinct animals such as wool mammoth  , 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 well-preserved DNA. On the other hand, for example, a gaur can have a cow as _ , definitely not a monkey. But what about an extinct animal 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 live in, but the other plants and animals they depended on for food may also be gone as well. 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
A


(Question)
Commander was my parents` cat but I knew him first. In fact, Commander was my college roommate`s cat. My roommate wanted to sell Commander, but no one would buy him. I called my parents to see if they would like to adopt him. My mom had always loved cats but my dad disliked cats very much. As predicted my dad said, "No way. No cats" Fortunately for me, my dad was out of town at a math conference. So I brought Commander home. By the time he returned, both my mom and Commander had decided that Commander was going to stay. My mom said that Commander was going to live at our house for a "trial period" while we looked for a buyer. As the months went by there was absolutely no effort to sell Commander and it became clear to my dad that Commander was there to stay. Commander started sitting by my dad as he read the newspaper and slowly my dad began to like Commander---just a little bit. By the time I came home that summer, I was surprised to see my dad carrying Commander around the house. Over the years, my parents` love for Commander grew to the point where they could not imagine life without him. Once I finished college, my parents built their dream house and they named the floor plan  The Commander! They worked with the architect to design the house so that it was perfectly suited both for them and for Commander. Commander died at the age of eighteen. My mom still talks about him often and misses him, and so does my dad, which proves that not even the most determined cat-hating human being in the world can resist the charms of a cat once the cat decides he is moving in to your heart. What did the author`s parents do when they designed their new house? A) They designed a room for Commander. B) They named the floor plan the Commander. C) They opened a door in the wall for Commander. D) They worked with the architect to build a cathouse
(Answer)
B


Ques: It just may be the world's most costly vacuum cleaner ( ). The price of CleanSpace One is eleven million dollars. But yet, it has a big job to do. Recently, researchers in Switzerland said they planned to build this new cleaning machine. CleanSpace One will not be for use in homes or businesses. It will be shot into space to help remove thousands of pieces of space junk floating around up there. Last year, we reported on the problem of space junk. Over time, many unused spacecraft have hit each other far above the Earth. Big pieces break into thousands of small pieces. Sometimes they fall back into the atmosphere   and burn up. But when they do not, it creates big problems. Scientists fear that if something is not done to remove these objects, it may soon become too dangerous to send people and machines into space. There is a large chance that they might hit some of this junk. So that is why the Swiss researchers are developing the new machine. CleanSpace One is not really a vacuum cleaner. It will not be used to take away space junk. But scientists plan to move it close to an old satellite that is no longer being used. Then a claw-like instrument will catch the satellite, and force it back through the atmosphere. There, the satellite will be destroyed by the heat of friction   with the air. Researchers say that all they need to do is slow down the speed of some of these unwanted objects. Once they begin to move more slowly, they will fall back to the Earth. There is little chance that they will fall through the atmosphere and harm the people or things below. What's the danger of space junk? A) It will pollute space. B) It will hurt people on the Earth. C) It will hit a spaceship. D) It will burn in the atmosphere.
Ans: C


An 18-year-old student was struggling to pay his fees. Not knowing where to get the money, he and a friend decided to host a musical concert to raise money for their education. They went to the great pianist Paderewski. His manager demanded $2,000 for the piano recital . A deal was made and the boys began to work to make the concert a success. The big day arrived. But unfortunately, they hadn't managed to sell enough tickets. The total collection was only $1,600. Disappointed, they went to Paderewski and gave him the entire $1,600, and promised to pay him the rest $400 back as soon as possible. "No," said Paderewski. "Keep the money you need for your fees. And just give me whatever is left." The boys were surprised, and very thankful. Paderewski later became the Prime Minister of Poland, and he was a great leader. When the World War broke out, more than l.5 million people went hungry, but there was no food to feed them. Paderewski turned to the US Food and Relief Administration for help. The head there was a man called Herbert Hoover -- who later became the US President. Hoover agreed to help and quickly shipped tons of food to Poland. Paderewski decided to go across to thank Hoover himself. When Paderewski began to thank Hoover for his kindness, Hoover quickly stopped him and said, "You shouldn't be thanking me, Mr. Prime Minister. You may not remember this, but several years ago, you helped two young students go through college. I was one of them." What can we learn about Herbert Hoover? A) He was one of the American presidents. B) He didn't finish his college education. C) He was very rich when he was young. D) He was one of Paderewski's students.

A