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Read the following article and select the best answer. Article: Since the beginning of the year, smog has covered parts of North China. In January, Beijing saw only five days without smog. The rising PM2.5 readings terrified many people, and some health experts said that whenever the smog gets serious, hospitals receive more patients suffering acute respiratory and heart diseases. Later, news of polluted underground water in some provinces scared people who wondered whether the water they drink is safe. So the need to emphasize environmental protection while developing the economy is heard everywhere. Smog is especially a common concern. As a popular online post said, air may be the only thing that is equal for everyone, despite your income or profession. People with higher incomes are able to drink only bottled spring water and eat only organic food by paying higher prices, but they breathe the same air as everyone else. At a meeting on Monday, many representatives have expressed their concerns about the air quality, too. One talked about his experience in Beijing. "After taking a taxi from the capital airport to my hotel, which took about an hour, I washed my nose and found the inside of my nose was black. We should ask ourselves this question: Why do we want to develop? It's for living a better life. Dirty air is definitely not a better life," he said. China needs to develop its economy and invest in hightech. Every Chinese has a dream to make China stronger. But without blue sky, clean water and safe food, the achievements in the economy will become meaningless. Space technologies are not to be developed for building a base on Mars so that one day all human beings can move to the red planet because they have destroyed Earth. What the public wants is a strong and beautiful China. The great efforts must be made to promote ecological progress and build a beautiful China. The words have shown the central government's determination to address the environment issue. Question: Why has smog become a common concern? _ - Because people have to pay higher prices. - Because a popular onlinepost discussed it. - Because we have to develop industry. - Because nobody can avoid it.
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Because nobody can avoid it.

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Read the following article and select the best answer. Article: There is nowadays in schools a great movement that places major emphasis on higher order skills, these being those skills that encourage the ability to reason. This group of skills involves recalling information, basic concept formation, critical thinking, and creative idea formation. Formerly viewed as the tools of mathematics, these skills are now recognized as necessary to abilities across the curriculum. Higher order thinking skills are now recognized as important for those who will enter the twenty-first century work force. Preparing young learners for their future requires that teachers employ a great deal of inventiveness and creativity in designing lessons that meet the dual challenge of providing the basics as in reading, language arts, and mathematics, and developing the ability to reason. This unit uses detective fiction to address both of these challenges, and the activities that lie here are designed to draw the learner along a path that moves him from the simple skills, such as recalling information, to the more difficult area of creative thinking. Activities may be modified, simplified, lengthened, or deleted to meet the needs of the intellectual diversity found in most classrooms. For this unit I have chosen three separate series of children's detective fiction. The easiest to read are the Private Eyes club mysteries, written and illustrated by Crosby Bonsall. This series centers on the activities of four neighborhood boys who along with their cat Mildred keep the area they live in free of crime. Each title is centered on one issue and the list of titles is expanding. The reading levels range from about 1.6 to 2.0 and the print is large and well organized on the page. Snitch, Wizard, Skinny, and Tubby are funny and engaging, and are represented in lively color illustrations. The only issue that could be a problem is that the private eyes are all boys. However, girls are well represented among the peripheral peer group. Question: What can we know from the above passage? - Children have different abilities. - Reading for information needs more skills. - Reasoning is higher than reading and writing in school. - Mathematics is the most difficult in school.
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Reasoning is higher than reading and writing in school.

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Read the following article and select the best answer. Article: It is sometimes said that strange flying objects have been seen high up in the sky. People call these strange objects Unidentified Flying Objects(UFOs). These UFOs caused a lot of interest. Some of the reports about them are difficult to believe. Some have been explained in scientific ways. Others have never been explained. Here is an account of UFOs from a report. Dennis Burdens, who wrote an article, tells us that he once saw a UFO himself. He was having dinner one night with a friend near Tripoli, Libya, and after dinner the two men walked across a yard to his room to look at some papers. Burdens noticed that the moon looked strange that night. "It wasn't the moon," was the reply. They watched the light and saw that it was moving. It seemed to be an object rather like a big plate. In some ways it looked like smoke with a light on it, but it wasn't smoke because it didn't change its shape. It was moving in a regular way. That is to say, it didn't go suddenly faster or more slowly, and it didn't go higher or lower. So the two men decided that there must be men in it. After that, Burdens said that he felt eyes looking at him. He was being watched in the darkness. When it was nearer, they noticed that the bottom parts were brighter than the top. The bottom was yellow and the top red. Then the object suddenly turned away and left Libya, moving very fast. On a later day Burdens talked to other people about it, and he found some who had seen it. They all described it in the same way. Could they all be mistaken? Question: UFOs are _ . - flying high up in the sky - strange flying objects - difficult to believe - very interested
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strange flying objects