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Article: These days we hear a lot about how air pollution is changing temperatures on the earth. New evidence from a mountaintop in China now suggests that pollution can also change the amount of rain and snow that falls in some places. Usually, more rain falls in mountainous places than in flat areas upwind from the mountains. That's because air can hold a lot of water. When wind blows wet air up a mountainside, the air gets colder. This temperature change often forces water to fall as rain or snow. In recent years, however, many mountainous areas in the western United States have been getting less rain than normal. Mountains that are downwind from cities have experienced the biggest drops. Some scientists have theorized that pollution drifts from the cities into the mountains, affecting rainfall, but proving this link has been difficult. Searching for answers, a team led by a scientist from the Hebrew University went to s mountain in China called Mount Hua, which is 2,060 meters tall and lies about 120 kilometers east of the Chinese city Xi'an. Since 1954, scientists have been collecting details about rainfall, humidity , and visibility in the area. Using this data, the scientists compared rainfall on Mount Hua to rainfall in the nearest city, Huayin, on days with different levels of visibility. When the air was clear and people could see as far as 20 km, the scientists found that 65% more rain fell on the mountain than in the city. But when the air was smoggy, allowing only 8 km of visibility through the mist, the mountain received just 20% more rain than the city. The new data supports the theory that pollution affects rainfall. Some scientists believe that there are other explanations for the numbers. It's possible, for example, that natural particles in the air, rather than particles produced by pollution, are affecting visibility. Question: According to the passage, what will probably happen when the wet air in the sky gets colder? Yes or no, is the answer "It will probably rain or snow"?
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No

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Article: in order to know a foreign language thoroughly , four things are necessary. Firstly, we must understand the language when we hear it spoken. secondly, we must be able to speak it ourselves, with confidence and without hesitation . Thirdly, we must do much reading. Finally, we must be able to write it. We must be able to make sentences that are correct in grammar. There are no shortcuts to succeed in language learning. A good memory is a great help, but it is not enough only to memorize the rules from a grammar book. it is not much learning by heart long lists ( ) of words and their meanings, studying the dictionary and so on. We must learn by using the language. If we are pleased with a few rules we have memorized, we are not really learning the language. We must "learn through use". Practice is important. We must practice speaking and writing the language whenever we can. Question: the most import things to learn a foreign language are Yes or no, is the answer "listening,speaking,reading and writing"?
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No

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Article: The OM Man and the Sea ,for which Hemingway was awarded the Nobel Prize for Literature, is one of the most influential novels of the literary treasure of the world. Famously known for his brief and short sentences ,Hemingway created ah interesting and unique style of writing that still appeal to readers today. Santiago was an aged Cuban fisherman, and many thought that he could no longer fish. For eighty-four days ,he set out to sea and returned empty-handed. So unlucky was he that the parents of his young, devoted apprentice and friend , Manolin , forced the boy to leave the old man in order to fish in a more profitable boat On the eighty-fifth day ,the fisherman set out into the open sea to go fishing. At noon ,a big Marlin took hold of one of the lines, but the fish was far too big for him to handle. Santiago let the fish have enough line, so that it wouIdn9t break his pole; but he and his boat were dragged out to sea for three days. Finally ,the fish grew tired. Santiago killed it Even this final victory didn't end his journey. He was still far, far out to sea. To make matters worse, Santiago dragged the Marlin behind the boat and the fish blood attracted sharks. Santiago did his best to beat the sharks away ,but his efforts were not enough, The sharks ate the flesh off the Marlin ,and Santiago was left with only the bones. Santiago was tired out He got back home with nothing to show for his pains but the skeletal remains of a large Marlin. Even with just the bare remains of the fish, the experience changed him, and charged the opinions others had of him. Manolin , who had been worried over the old man's absence, was moved to tears when he found Santiago safe in his bed, When the old man woke ,the two agreed to fish as partners once more. With Santiago5S struggle to catch the Marlin and his journey home ,Santiago's courage was obvious as he faced challenges that just didn't seem to end. He didn't give up and even though he felt he had been very unlucky, there was hope to keep going on. He was destroyed... Question: Who is the hero of The old Man and the Sea? Yes or no, is the answer "Santiago."?
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No