The earth is the only planet that scientists think has life. Why does the earth have life while the other planets don't? For one thing, the earth is just the right temperature. As from the sun, the earth seems to be just the right distance away. The planets which are closer to the sun are hot that their surfaces bake in the sun. The farthest planets are cold balls. When the earth developed -- which scientists believe may have happened about 4 billion years ago -- many gases covered the earth. The gases caused the earth to be hot. But something wonderful happened. The temperature was just right for thick clouds to form. It rained very hard for a very long time. This gave the earth its oceans. Water made it possible for plants to grow. The plants created oxygen in the atmosphere. Oxygen is the gas that humans and animals breathe. Only one other planet in the solar system seems to be something like the earth. That planet is Mars . Mars is smaller than the earth, and it is quite a bit cooler. But it is not too cold for humans. On some days, the temperatures are as low as a winter day in the northern United States. If you wore a special space suit, you could walk around on Mars. You would have to bring your own air to breathe, the air on Mars is too thin to breathe. Mars has the largest volcano in the solar system. It is sixteen miles high. The highest volcano on the earth is five miles high. The most unexpected sight on Mars is dried up river beds. Scientists believe that Mars was once much better than it is now. Does this mean there could have been living things on Mars? Scientists are not sure, but there has been no sign so far. Which of the following about the Mars is NOT true? A) There could have been living things on Mars. B) Mars has the largest volcano in the solar system. C) There is almost no oxygen in the air on Mars. D) Mars is smaller than the earth, and it is quite a bit cooler.
A
He is a familiar sight, the old man who asks change from drivers stopped at a red light on East 35th Street in Slidtown Manhattan every day. After all, he has been at it for 17 years now, seven days a week. With the help of a walker, he hobbles between lanes of traffic, approaching drivers, offering newspapers --- often a free paper collected from boxes on the sidewalk nearby --and asking for change."Help a guy out?" he repeats to drivers who will usually hand over a dollar or some change. Most drivers simply regard him as another homeless down-and-out ,but every so often one might realize that it's the legendary comedian Professor Irwin Corey, who is now 98. Over his eight-decade career, he has been on television and in comedy clubs, nightclubs and concert halls worldwide. He began his stage career on Broadway in 1943. Indeed, he still performs fairly regularly -- a week ago he flew to Chicago to play two nights at a local club. And though he has a homeless appearance, Mr. Corey lives in a comfortable 1840 carriage house on East 36th Street between Lexington and Third Avenues that he estimates could sell for $3.5 million. Mr. Corey said he gathers his daily take-- usually about $100, though there have been $250 days-- every few months and donates the money to a charity that buys medical supplies for children in Cuba. As for the drivers he solicits, Mr. Corey said, "I don't tell them where the money's going, and I'm sure they don't care." Mr. Corey has traveled to Cuba to donate personally. There are photographs of him with President Fidel Castro on his wall. One is with an inscription by Castro: With admiration, gratitude and affection. According to the passage, Corey _ . A) has sold his carriage house for charity B) is still going on with his acting career C) makes a living by begging in the street D) leads a poor life with all his money lost
B
Q: There was a little boy with a bad temper . His father gave him a bag of nails and told him that every time he lost his temper, he must hammer a nail in the back fence. The first day the boy had driven 37 nails into the fence. Then _ began to become less. He discovered it was easier to hold his temper than to drive those nails into the fence. Finally the day came when the boy didn't lose his temper at all. He told his father about it and the father suggested that the boy now pull out one nail for each day that he was able to hold his temper. The days passed and the young boy was finally able to tell his father that all the nails were gone. The father took his son by the hand and led him to the fence. He said, "You have done well, my son, but look at the holes in the fence. The fence will never be the same. When you say things in anger, they leave a scar just like this one. You can put a knife in a man and draw it out. It won't matter how many times you say I'm sorry, the wound is still there. A verbal wound is as bad as a physical one. Friends are a very rare jewel, indeed. They make you smile and encourage you to succeed. They lend an ear, they share a word of praise, and they always want to open their hearts to us. Show your friends how much you care. Send this to everyone you consider a FRIEND. The holes in the fence suggested_. A) that verbal wound will never be cured B) that once friendship is lost, it will never come back C) the mistakes you have made in your life and the injuries that they have left D) the verbal wound that you will show to everyone you consider a friend
A: C
(Q).
The researchers, led by Hwang Woo-suk, insist they cloned an Afghan hound, only to help investigate human disease, including the possibility of cloning stem cells for treatment purposes. But others immediately renewed calls for a global ban on human reproductive cloning before the technology moves any farther. "Successful cloning of an increasing number of species confirms the general impression that it would be possible to clone any species of mammals, including humans," said Ian Wilmut, a reproductive biologist at the University of Edinburgh who produced the first cloned mammal, Dolly the sheep, from an adult cell nearly a decade ago. Researchers have since cloned cats, goats, cows, mice, pigs, rabbits, horses, deer, mules and gaur, a large wild ox of Southeast Asia. So far, efforts to clone a monkey or another primate with the same techniques have failed. Uncertainties about the health and life span of cloned animals continue to exsist; Dolly died at a young age in 2003 after developing cancer and arthritis. Wilmut and others _ Hwang's achievement, reported Wednesday in the journal Nature. But they said politicians and scientists must face the larger issue -- how to go on with the research without crossing the moral boundary of copying human life in the lab. "The ability to use the technology is hopeful," said Robert Schenken, president of the American Society for Reproductive Medicine. "However, the paper also points out that in dogs as in most species, cloning for reproductive purposes is unsafe." The cloned puppy was the lone success from more than 100 dogs implanted with more than 1,000 cloned embryos. In a news conference in Seoul, the cloning team also condemned the reproductive cloning of humans as "unsafe and inefficient." Human reproductive cloning already is banned in South Korea. Other nations, including the United States, are divided on whether to ban just human cloning or cloning of all kinds, including the production of stem cells. A _ is a large wild ox of Southeast Asia. A) horse B) deer C) mules D) gaur
(A).
D