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Read the following article and select the best answer. Article: Last weekend marked one of the nicest days so far this spring. It was warm with a tiny wind, the sun streamed through lightweight sweaters to warm the skin; the male choir was warming up, and the students were moving around the lawn behind the huge crowd of six-thousand-plus observers. With all of the parents, sisters, brothers, grandparents, aunts and uncles, the state university was a center of activity. My nephew was going to receive his bachelor's degree. Who would have guessed that four years would go by so quickly? As the crowd of freshly polished candidates wandered, joked, hugged and chatted behind the bleachers , I heard several cell phones ring. There were several casual conversations going on with the accompanying giggles of the not-quite-mature students, but then one conversation in particular caught my attention: "Yes, Grandma, I'm really graduating. I can't believe it, either! I never thought I'd be here today, you know? Really! Like, I know it! Yes, it's a very special day. Oh, what did the doctor say? He did? I know, Gran... I know you wanted to come... It's okay... No, really, please don't cry...It's a very happy day, you know? "Hold on, we're lining up okay, all set... yes, the center aisle ... the grass is awesome! Smells really good, too... Oh wow, they've got like a million balloons they're going to release! Yes, Kelly's here... Okay, I'll give her your love... here we go! Gran, I'm graduating! "Love you, too, Gran. I'm so glad you could be here with me!" And somehow, my initial dislike at the use of cell phones and the casual conservations during such a serious occasion left me. For these little representatives of modern technology had joined a young woman and her fond Gran to share a very special moment in time. Question: How did the author feel at first about the students casual conversations? - Curious - Annoyed - Surprised - Excited
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Annoyed

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Read the following article and select the best answer. Article: After her husband had gone to work, Mrs Richards send her children to school and went upstairs to her bedroom. She was too excited to do any housework that morning. In the evening she would go to a fancy dress party with her husband. She wanted to dress up as a ghost and as she had made her costume the night before, she was impatient to try it on. Though the costume consisted only of a sheet, it was really splendid. After putting it on, She went downstairs to find out whether it would be comfortable to wear. Just as Mrs Richards was entering the dining-room, there was a knock on the front door. She knew it must be the baker. She had told him to come straight in if ever she failed to open the door and to leave the bread on the table. Not wanting to frighten the poor man, she quickly hid in the small store-room under the stair. She heard the front door opened and heavy footsteps in the hall. Suddenly the door of the store-room was opened and in came a man. Mrs Richards realized it must be the man from the Electricity Board who had come to read the meter. She tried to explain the situation, saying "It's only me. "but it was too late, the man let out a cry and jumped back several paces. When Mrs Richards walked towards him, he fled, losing the door heavily behind him. Question: The man _ and that made him cry out and run away. - thought he must have met a ghost - recognized Mrs Richards - found out Mrs Richards was walking towards him - thought that Mrs Richards must have recognized him
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thought he must have met a ghost

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Read the following article and select the best answer. Article: Snow-melting Agent A heavy snow can kill pests and this means a good harvest next year.This will bring as well as trouble to urbanites. On Nov.16,2003,a cold air current brought a heavy snow to Beijing.To prevent traffic jams,related government departments mobilized people to clear off snow on streets. One of the most effective ways to clear off snow on roads is to scatter snow-melting agent on the roads.The major component of the snow-melting agent is salt.The snow-melting agent can make snow stop from freezing,make it easier to clear off the road,and allow traffic to flow smoothly.But it also brings about some hidden dangers.In the spring of 2003,over 300 000 trees in Beijing urban districts died.After analyzing soil around these trees,experts discovered that the salt content of these soils was 392 times higher than normal.Where did the excessive salt come from?After investigating,forestry experts found that when clearing snow in the winter,people usually heap snow containing snow-melting agent at trees' roots,and that when the snow melts,this agent penetrates the soil and increases its salt content.The snow-melting agent indirectly killed the trees. Statistics show that during a heavy snow in 2002,over 1000 tons of snow-melting agent was scatterred on streets in Beijing.Snow water containing a large amount of snow-melting agent got into the soil through sewers. In addition,salt in the snow-melting agent can expedite the corrosion of steel bars in concrete buildings and cause the concrete to crack and peel,shortening the life of roads. Scientists and government officials are required to solve traffic problems caused by heavy snows as soon as possible and at the same time try to reduce the negative effects of the snow-melting agent.This is a difficult problem placed before them.Related authorities have framed some local criteria to regulate the production and use of snow-melting agents. Now,more harmless snow-melting agents are being developed.Now that even snow-melting agents that meet today's criteria must... Question: This text most probably appears in _ . - a newspaper - a magazine on latest findings - a book on salt - a magazine on environmental protection
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a magazine on environmental protection