Neither rain nor snow nor the dark of night can separate Tennessee postal carrier "Mailman Mike" from his 4-and-a-half-year-old friend Carter Lawson - or keep them from their appointments. For the past nine months, the two have teamed up every day in the preschooler's Knoxville neighborhood for a few minutes of delivering mail together and chatting with fellow neighbors. Lawson wants to be a mail carrier when he grows up, and in an inspiring story, his mom told us how mailman Mike Crenshaw has been a role model to her son. "Anyone could just be like 'Go away, kid', but Mike has really gone out of his way to talk with Carter," said Cassie Lawson of the United States Postal Service carrier. Little Carter even got his own uniform to match Mike's. "It's been really cute. I just couldn't believe he got a full mailman's costume," the postal service employee said. "Every letter carrier has stops he looks forward to and this is the one I look forward to every day," said Mike. "He's the end of my day, and the best part of my day. Not because it's the end, but because he's such a cute little guy." The man and the little boy's connection isn't a surprise to Fredric Rolando, president of the National Association of Letter Carriers. "Kids respond to mailmen because letter carriers are a friendly, uniformed part of the neighborhood who bring something to their house every day, and are someone they come to recognize and trust," Rolando said. "It's the same for the elderly, but in addition, letter carriers may be the only person they communicate with all day." Why does Mike Crenshaw like the last stop of his day?   _ A) It is where he lives. B) It is where he is paid. C) He wants to be with Carter. D) He can finish his work by then.
C
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Tabb doesn't look like a typical music teacher. But every weekday evening in the French Quarter New Orleans, he beats out the rhythm on his music stand as students play their chosen instruments. "I'm doing my best to take young people away from harmful things," said Tabb. His program,  "The Roots of Music", offers free music education to more than 100 students. He struggles to _ in the city with the nation's highest murder rate . Tabb chose to target 9to14yearolds with his program. "That's a very important time in your life," he said. "If I catch them then, I can hold onto them for at least four or five years and guide them the way that will lead them to success." Students meet from 4 pm to 7 pm every weekday, all year round. They work with tutors  on schoolwork, practice their music and eat a hot meal before heading home. With the money provided by some people, Tabb's group is able to provide bus transportation, instruments and food for free. He calls it his "no excuse" policy. "You have no excuse why you're not here," Tabb said. Tabb owes the success in part to the nature of music. "You're always learning something new,"he said. "That's what keeps the kids coming back every day." But the program isn't only about fun. "Music is about discipline  ,"said Tabb. He insists on good behavior and keeps kids in order with threats of situps , pushups  or tasks like picking up grains of rice -- but these measures aren't just punishment. Tabb wants young people to realize that music can help them build a better future. "I don't say that I'm saving lives," he said. "I say I'm giving life -- a whole different life of music." Which of the following kids may NOT be included in Tabb's program " The Roots of Music"? A) Jack, 8 years old. B) Tom, 9 years old. C) John, 11 years old. D) Linda, 13 years old.
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Nowadays, there is a heated debate on whether pollutants should be cleaned in the air. Cleaning up the air, while good for our lungs, could make global warming worse. And the pollutants still go up around the air, along with carbon dioxide. These pollutants are called aerosols   and they include soot as well as mixtures of nitrogen  and sulfur  and other stuff into the air. Natalie Mahowald, a climate researcher at Cornell University, says so far, scientists have mostly tried to understand what those aerosols do while they're actually in the air. "There are so many different kinds of aerosols," she says. "Some warm and some cool. But in fact, humans are giving out a lot of extra aerosols, and they tend to cool for the most part." The aerosols reflect sunlight back into space, or keep us cool. But it turns out that's not all they do. These aerosols also influence how much carbon dioxide gets drawn out of the air by plants on land and in the sea. "They can add nutrients, for example, to the oceans or to the land," Mahowald says. "But also while they're in the atmosphere they can change the climate, and thus that also can influence the amount of carbon, the land or the ocean can take up. So there are quite a few different ways that aerosols can act on each other." Mahowald's results suggest that reducing those pollutants could be an even bigger problem than realized, when you consider that aerosols help remove carbon dioxide from the air by encouraging plant growth. Hard numbers on this effect are highly uncertain at the moment, but this could turn out to be quite significant. And studying it is not easy because the effects aren't well understood. For example, nitrogen can be a fertilizer  , but it can stop plant growing when nitrogen comes out of the air in acid form.  Right now it seems like we're much more likely to clean up aerosol pollution, while increasing the amount of carbon dioxide in the air. So scientists, unfortunately, may have a chance to see whether this experiment on our planet should continue or not. What does the last sentence of the passage imply? A) Scientists will be in a dilemma. B) The experiment will be successful. C) Scientists will carry out the experiment. D) Scientists have difficulty in the experiment.
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This is a tense time for students in America,with the exam season in full swing and the stress and anxiety being felt across the country.At some universities,students are reviewing their lessons,knowing that in a few weeks the stress will be over once they put pen to paper in that exam hall.For others,however,that stress and anxiety may well last a while longer as lecturers continue to refuse to set exams.No one knows when things will get back to normal. The reason behind this trouble is the ongoing argument in higher education between lecturers and employers over pay.The Association of University Teachers(AUT)are currently taking industrial action because of the fact that lecturers have been underpaid for years.Vice-presidents of the universities,who enjoy six-figure salaries,are not making any noises to suggest that this will change in the near future. The National Union of Students(NUS) ly believes that our lecturers should be better paid,and that the promises made to them during the top-up fees debate about extra income must be kept. It's shameful that 1ecturers have had to take industrial action to achieve better pay and conditions while vice-presidents'own salaries have risen 25%over the past three years.But the students who are suffering as a result of the argument must be put first.We do not agree with the attitude taken by the AUT,which is refusing to set exams.We admit that the decision to take this course of action was democratically reached.However,it is having the biggest effect on our members at this moment in time and we will continue to let the AUT know the results of this. We call on both sides to sort this mess out.Hopefully then our members can get the horrible exam season Out of the way and start planning,and enjoying,their upcoming summer holiday. The author wrote this article on behalf of  _  . A) the vice-presidents B) the lecturers C) the students D) the AUT

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