名校高考英语阅读理解精读Happiness.docx

名校高考英语阅读理解精读HappinessOne person’s happiness causes a chain reaction that benefits not only their friends, but their friends’ friends, and their friends’ friends’ friends. The effect lasts for up to one year. The opposite, interestingly, is not the case: Sadness does not spread through social networks as strongly as happiness. Happiness appears to love company more so than misery.Focusing on 4,739 individuals, Christakis and Fowler, who co-authored this study, observed more than 50,000 social and family ties and analyzed the spread of happiness throughout this group. The researchers found that when an individual becomes happy, a friend living within a mile experiences a 25 percent increased chance of becoming happy. A co-resident spouse (配偶) experiences an 8 percent increased chance, siblings (兄弟姐妹) living within one mile have a 14 percent increased chance, and for next-door neighbors, 34 percent. But the real surprise came with indirect relationships. Again, while an individual becoming happy increases his friend’s chances, a friend of that friend experiences a nearly 10 percent chance of increased happiness, and a friend of that friend has a 5.6 percent increased chance.The researchers also found that, contrary to what your parents taught you, popularity does lead to happiness. People in the center of their network groups are the most likely people to become happy, and then there are chances that increase to the extent that the people surrounding them also have lots of friends. However, becoming happy does not help migrate a person from the network fringe (外围) to the center. Happiness spreads through the network without changing its structure.“Imagine a bird’s eye view of a backyard party,” Fowler explains. “You’ll see people in groups at the center, and others on the fringe. The happiest people tend to be the ones in the center. But someone on the fringe who suddenly becomes happy, say through a particular exchange, doesn’t suddenly move into the center of the group. He simply stays where he is—only now he has a far more satisfying sense of well-being.”Next time, if you’re happy and you know it, thank your friends—and their friends. And while you’re at it, their friends’ friends. But if you’re sad, hold the blame.12. Who will be more likely to become happy as a man is happy according to the research?A. His wife.B. His next-door neighbors.C. His brothers and sisters.D. A friend of his friend.13. Why does Fowler mention a backyard party in Paragraph 4?A. To explain a rule.B. To clarify a concept.C. To describe a fact.D. To make a prediction.14. What does the research aim to tell us?A. Happiness changes social structures.B. A social network is a double-edged sword.C. Happiness goes hand in hand with sadness.D. Happiness spreads through social networks.15. What do we know from the last two paragraphs?A. Friends’ friends may bring you happiness.B Your friends are to blame for your sadness.C. Your friends decide whether you are happy.D. The happiest friends at party are on the fringe.BBDAA new study published in Thursday’s edition of Cell reports that mosquitoes’ sense of smell is more complex than we once thought. And it may explain how they are so good at seeking us out in the darkness and lead to new strategies to fight against the potentially deadly diseases caused by their bites.Until Meg Younger, co-author of the study, and her colleagues started studying mosquitoes, it’s long been known that mosquitoes rely on multiple clues to target humans, First, they will sense the CO2 in the breath from a distance that can be more than 30 feet. After the CO2, then they begin to sense human body smells. They follow the odors(气味) and, when they get very close, start to detect body heat. Once they land on the skin, they look for a place to bite with their legs.In many parts of the world, their bites may lead to such diseases as dengue, Zika, chikungunya and malaria. The latter disease alone causes over half a million deaths each year around the globe.“But most of what we know about mosquitoes’ sense of smell comes from the study of the brains of mice and fruit flies, where the pathways between the brain and smell detectors are fairly simple: Each neuron(神经元) in their smell detectors just responds to a single kind of smell and all the neurons for that smell are connected to the same part of their brains. Of course, there are countless different detectors responding to countless smells,” says Younger. “When we started looking inside mosquito brains, we found that each neuron can detect multiple smells.”“It’s a great breakthrough,” says Josefina del Marmol, a scientist at the Harvard Medical School who wasn’t involved with the research. “It will change a lot about what we know of how mosquitoes interact with the world and give researchers additional ways to fight the bugs. But there’s more work to be done to test, neuron by neuron, which neuron actually r。