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e a hard time finding discounted models from the year before. Car dealerships are less motivated to offer steep discounts from March through May. Instead, plan to buy your car during the fall or winter. You should also research the auto you want at TrueCar before heading for the dealership. The site offers information on what people in your area paid for vehicles equipped with the options you want. Spring clothing When warm weather makes you want to head outdoors, resist the urge to do so wearing the latest fashions. You won’t find March deals on swimsuits, Easter dresses or other spring items. To find discounts on clothes of this spring, hold off until Memorial Day weekend. You can also look for online and instore savings at Amazon, Macy’s, Saks Fifth Avenue and other retailers. 21. Which things offer discounts in March according to the text? A. Frozen food and new cars. B. Boxed chocolates and new cars. C. Frozen food and boxed chocolates. D. Boxed chocolates and spring clothing. 22. What does the author advise us to do? A. Register on a site. B. Attend a holiday event. C. Consult people in our areas. D. Look for discount information online. 23. Which of the following festivals is celebrated after March? A. Memorial Day. B. National Frozen Food Month. C. National Chocolate Caramel Day. D. National ChocolateCovered Raisin Day. B Throughout the past few years, I have tried to give myself to others. I have bounced around to find where I truly fit in. I found my place while I stayed in Guatemala, an orphanage(孤兒院 ), with the children living there. Through hearing many stories of their lives, I was moved to tears and started question my living ways and gave up everything that wasn’t essential。t easy to create but was so rewarding to give. I’ve always struggled to be on a journey of faith, but I’ve never pletely stepped foot onto the path until Guatemala. I’ve always tried to open my heart to everyone around me and give them my love. I feel as though I cut open my heart and share every bit of love I had with these orphans. There is one orphan named Ceto who will always remain very close to my heart. In Guatemala, I sponsor with thirty dollars a month, but it doesn39。s clear that we need more research on how our devices affect our moral decision making because we’re using screens at an ever increasing rate. 28. Why did the author mention the trolley problem? A. To introduce a difficult problem to readers. B. To introduce the aim of carrying out the study. C. To show an example of the questions in the study D. To show the difficulty in dealing with dilemmas. 29. How do the smartphone users of the study behave in dealing with emotional dilemmas? A. Calmly. B. Cruelly. C. Hesitantly. D. Enthusiastically. 30. Dr Albert believes that pared with PCs, samrtphones . A. help people bear more pressure B. help people make decisions quick C. make people feel more mentally distant D. make people stay happier to solve problems 31. What can we infer from the text? A. Shopping online has a great effect on making moral decisions. B. The people using smartphones are more than those using PCs. C. People who often use samrtphones or PCs always meet with dilemmas. D. It is mon for people to be involved in making moral decisions in daily life. D There is a breakthrough in building aircrafts. Bendable wings covered with overlapping (部分重疊 ) pieces resembling fish sizes could be used to build swifter, fuelefficient aircraft, a new study finds. Nowadays, conventional aircrafts typically rely on ailerons(副翼 )to help control the way the planes tip as they fly. However, when the Wright brothers flew the first airplane, Flyer 1, over a century ago, they used no ailerons but wires and pulleys that twisted the woodand canvas wings, to control the plane. Scientists have long sought to develop aircrafts that can alter their wings during flight just as birds can. However, most previous attempts have failed because they relied on heavy mechanical control structures within the wings. These structures were also plex and unreliable, said Neil Gershenfeld, a physicist and director of the Center for Bits and Atoms at Massachusetts Institu