(Q).
I'm taking a test and have to guess the right answer to the question after the article. Article: Scientists have been puzzled by the phenomenon that migrating birds fly not just in groups all the time, but in "V" formations and they have tried to figure out what benefit birds get from this particular formation. Now, a research group from University of London may have found the answer -- migrating birds fly in a "V" to save energy, according to a study published in the journal Nature. When a bird flaps its wings, it stirs the air around it and causes it to move indifferent directions. Scientist found in the study that the air creates an upward-moving wave at the tips of the wings, which means that if a bird flies around the wingtips of another bird, it can get a boost from the rising air and therefore use less energy to stay in the air. Apart form the "free ride" strategy, scientists were also surprised to observe that migrating birds timed their wing beats and adjusted their positions in a very precise way to maximize the lifting effect while avoiding areas where the air move downward. "They're able to sense what's going on from the bird in front, where this 'good air' is coming from and now how to position themselves perfectly in it," lead researcher Steven Portugal told BBC. In fact, the "V" formation has long thought to help birds fly more efficiently . A previous study showed that birds' heart rates went down when they were flying together in a "V" formation. Jet fighters were also found to be able reduce their energy use by up to 18% by staying near the wingtips of other jet fighters. Both of these findings led scientists to suspect that the "V" formation had an efficiency purpose, but until now they still lack proof. "For scientists, the new study provides an insight into an interesting natural phenomenon. But it could mean even more for aircraft companies -- helping them understand how they can _ that with their plane formations to save fuel, said Portugal." Question: What is the author's purpose in writing this article? Options: A: To explain how birds benefit from migration. B: To introduce how migrating birds find their way. C: To tell some applications of migrating birds' "V" formations. D: To report new findings about migrating birds' "V" formations.
(A).
D

(Q).
I'm taking a test and have to guess the right answer to the question after the article. Article: First lady Michelle Obama turns 50 on Friday, Jan. 17, 2014. Michelle Obama has spent the first half-century of her life breaking barriers and checking off a series of firsts. Now, as she reaches her milestone birthday Friday, the nation will be watching to see in what other areas she will leave her mark. Five years after moving into the White House, and without a re-election campaign to worry about, she has more room to relax in her role and, political watchers say, possibly become more vocal on political issues in the three years left in office. So far, critics have complained about Michelle's silence on issues where they expected to hear her voice: Last year, at the start of her husband's second term, she disappointed advocates for tighter gun-control measures after she failed to push harder on the issue in response to the massacre at Sandy Hook Elementary School in Newtown, Conn. She also disappointed some feminists who wanted her to defend their causes instead of falling back on her self-described role as the nation's "mom-in-chief." Nor did she handle racial issues during her second term, as some had expected. "The most important thing to remember is, whether you are black, white or Hispanic, you're the first lady and the president of all the people in the United States. That's a huge melting pot, so to reinforce that she's African American over anything else would not be wise," said Anita McBride, who directs programming and national conferences on the legacies of America's first ladies and their historical influence at American University. Valerie Jarrett, a top White House adviser and a close friend of the Obamas, said the first lady doesn't want to " _ " "She really wants to have a maximum impact and to do that in fewer areas," Jarrett told the Associated Press. "That, she said, "is better than trying to take on every single possible cause." But Robert Watson, a Lynn University professor, said he expects Obama to "go a little harder at issues" over the next several years. "Second-term first... Question: Critics were disappointed with Michelle because _ . Options: A: she didn't put gun-control measures into effect B: she failed some feminists to stand out to be a career woman C: she didn't solve some racial problems D: she failed to voice her opinion on some issues
(A).
D

(Q).
I'm taking a test and have to guess the right answer to the question after the article. Article: Recently, one of my best friends, whom I'd shared just about everything with since the first day of kindergarten, spent the weekend with me. Since I moved to a new town several years ago, we'd both always looked forward to the few times a year when we could see each other. Over the weekend, we spent hours and hours, staying up late into the night, talking about the people she was hanging around with. She started telling me stories about her new boyfriend, about how she experimented with drugs and was into other bad habits. I was blown away! She told me how she had been lying to her parents because they didn't want her around him. I tried to convince her that she was ruining her future and heading for big trouble. But she didn't believe me. Her self-respect seemed to have disappeared. I just couldn't believe that she really thought it was acceptable to hang out with such a loser. By the time she left, I was really worried about her. It had been so discouraging, and I had come close to telling her several times during the weekend that maybe we had just grown too far apart to continue our friendship--but I didn't. I put the power of friendship to the ultimate test. We'd been friends for far too long. I had to hope that she valued me enough to know that I was trying to save her from hurting herself. I wanted to believe that our friendship could conquer anything. A few days later, she called to say that she had thought long and hard about our conversation,and then she told me that she had broken up with her boyfriend.I just listened on the other end of the phone with tears of joy running down my face. It was one of the truly rewarding moments in my life. Never had I been so proud of a friend. Question: From the beginning of the text,we can learn that the author _ . Options: A: lost touch with the girl several years ago. B: used to spend weekends with the girl. C: moved to the same town as the girl. D: kept in touch with the girl.
(A).
D