Read the following article and answer the question. Article: Snow falls in the Earth's extreme North and South throughout the year. However, the heaviest snowfalls have been reported in the mountains of other areas during winter. Snow is even known to fall near the Equator ,but only on the highest mountains. Snow contains much less water than rain, but much of the water the world uses comes from snow. Melting snow provides water for rivers, electric power stations and agricultural crops. In the western United States, mountain snow provides up to seventy-five percent of all surface water supplies. Snowfall helps to protect plants and some wild animals from winter weather. Fresh snow is made largely of air trapped among the snow crystals . Because the air has trouble moving, the movement of heat is limited. Snow also influences the movement of sound waves. The surface of the snow takes in, or absorbs, sound waves. As snow grows older or if there have been strong winds, it can become hard and flat. Then, the snow,s surface will help to send back sound waves. Snow may be beautiful, but it can be deadly. It is responsible for the deaths of hundreds of people. Many people die in traffic accidents on roads covered with snow and ice or from being seriously stuck in the winter storm. Others die from heart attacks caused by too much physical activity out in the cold. People may not be able to avoid living in areas where it snows often. However, they can avoid becoming victims of snowstorms. People should stop driving and stay at home until the storm has passed. People living in these areas should carry emergency supplies in their vehicle. These include food,emergency medical supplies,and extra clothing to stay warm and dry. Question: Snow protects plants and wild animals from cold weather by _ . Answer:
OPTIONS:
- supplying much more air
- limiting heat movement
- absorbing strong winds
- sending back sound waves
limiting heat movement

Read the following article and answer the question. Article: US Defense Secretary Donald Rumsfeld is likely to visit China at an "appropriate" time this year, a senior Chinese military official said on Monday. Colonel Tu Qiming, director of the American and Oceania Affairs Bureau of the Foreign Affairs Office at the National Defense Ministry, made the remark during Sino-US defense talks this week. This is the first ever "special defense policy dialogue" between the two defense ministries, according to the Chinese military. *** FRANCES Agriculture Ministry has confirmed the first case of mad cow disease detected in a goat last Friday. The goat killed in 2002 tested positive for mad cow disease. It is the first case in the world of the fatal disease being found in an animal other than a bovine. The human form of mad cow disease causes brain-wasting, personality change, loss of body function, and ends in death. The European Commission has not advised any change in farming and consuming goats, said the French Ministry in a statement published last Friday. *** MOBILE phone sales hit a new record in 2010, with some 684 million units sold around the world, the US research institute Strategy Analytics said on Thursday. The number represents an increase of 32 per cent over 2003, when 571 million units were sold. Strategy Analytics predicts a more modest rise of 8 per cent for this year, to 735 million. Finnish cell phone provider Nokia stayed out in front in 2010, with sales of 207.6 million units, giving it a market share of 30.4 per cent. Motorola moved to No 2, just ahead of the South Korean company Samsung. *** SIX male penguins at a German zoo are proving stubbornly resistant to females brought in from Sweden to make them into breeding .Of the ten male penguins at the zoo, six have formed into "homosexual" couples and have shown no interest in the females, making breeding an impossibility. So the zoo imported the four female penguins from Sweden last month, full of hope that the new arrivals could "turn" the males. But so far, the boys are remaining strictly with the boys. Question: From the fourth piece of news we know that _ . Answer:
OPTIONS:
- the scientists haven't succeeded in doing their experiment
- the scientists have successfully got six female penguins into breeding.
- the Sweden girls made the boys show interest in them
- German boys don't like Sweden boys

Answer: the scientists haven't succeeded in doing their experiment

Question: Read the following article and answer the question. Article: Guangzhou (Xinhua)----12 people were killed and 20 injured early yesterday morning when they jumped from a burning train car into the path of an oncoming goods train in Southern China. When No. 247 Wuchang----Guangzhou passenger train was passing the Dayaoshan Tunnel in Guangdong Province, South China at 00 :17 hours yesterday, a fire caused by passengers' smoking broke out on No. 17 car. They wanted to extinguish fire. As the train stopped some frightened passengers jumped from windows. 12 people were crushed to death and 20 others injured by a northward passing goods train(No. 1766). Question: What was the cause of the fire? Answer:
OPTIONS:
- A heavy rain.
- High temperature.
- Carelessness.
- Fear.
Answer: Carelessness.

Read the following article and answer the question. Article: Some scientists have suggested that it might in some cases be ethically acceptable to clone existing people. One possibility is generating replacement for a dying . All such possibilities, however, raise the concern that the clone would be treated as less than a complete individual, because he or she would likely suffer from limitations and expectations based on the family's knowledge of the genetic "twin." Those expectations might be false, because human personality is only partly determined by genes. The clone of an extrovert could have a quite different way of behavior. Clones of athletes, movie stars, or scientists might well choose different careers because of chance events in early life. Some people have also put forward the belief that couples in which one member is infertile might choose to make a copy of one or the other partner. But society ought to be concerned that a couple might not treat naturally a child who is a copy of just one of them. Because other methods are available for the treatment of all known types of infertility, the traditional choice seems more appropriate. None of the suggested uses of cloning for making copies of existing people is ethically acceptable to my way of thinking, because they are not in the interests of the resulting child. It should go without saying that I am strongly opposed to allowing cloned human embryos to develop so that they can be tissue donors. In spite of this, it seems clear that cloning from cultured cells will offer important medical opportunities. Predictions about new technologies are often wrong: societal attitudes change; unexpected developments occur. Time will tell. But biomedical researchers looking into the potential of cloning now have plenty to do. Question: What is the author's attitude towards cloning technology? Answer:
OPTIONS:
- It should be condemned.
- It has medical potential for scientists to explore.
- It should wait till people's views change.
- It was unethical from the very beginning.
It has medical potential for scientists to explore.