【正文】 語境可知,收到了一個匿名寄件人的包裹,Hunter是非常震驚的,故選A項。結合語境和下文可知,包裹中有Hunter的錢包,另外還有額外的40美金,故選C項。結合語境可知,此處意為“錢包的返還”,故選D項。根據(jù)語境可知,因為是匿名包裹,Hunter的母親是想找到寄件人,故選B項。根據(jù)語境和下文可知,選B項。根據(jù)句意可知,be identified as意為“被認為是……”,故選C項。doubted疑惑。thoughtful深思的。timing時機。admitted承認。district區(qū)域。praising表揚。faith信仰,信心。　　While some pictures are intended 9. __________ fun online, Chinese authorities are taking it 10. __________(serious). Some people who have participated in the trend have received tickets for breaking traffic laws to get the perfect photo. 考查時態(tài)和語態(tài)?？疾榉侵^語動詞。句意: 社交媒體熱潮很快就席卷了中國社交媒體平臺——微博。文中泛指“一名官員”,officer的首字母發(fā)音是元音,所以填不定冠詞an。閱讀理解　　Don’t get mad the next time you catch your teenager texting when he promised to be studying. He simply may not be able to resist. A UI (University of Iowa) study found teenagers are far more sensitive than adults to the immediate effect or reward of their behaviors. The findings may help explain why the initial rush of texting may be more attractive for adolescents than the longterm pay off of studying. “For the teenager, the rewards are attractive,” says Professor Jatin Vaidya, an author of the study. “They draw adolescents. Sometimes, the rewards are a kind of motivation for them. Even when a behavior is no longer in a teenager’s best interest to continue, he will still go on. That’s because the effect of the reward is still there and lasts much longer in adolescents than in adults. ”For parents, that means limiting distractions so teenagers can make better choices. Take the homework and social media dilemma for example: At 9 p. m. , shut off everything except a puter that has no access to Facebook or Twitter, the researchers advise. “I’m not saying they shouldn’t be allowed access to technology,” Vaidya says. But some help in netting their concentration is necessary for them so they can develop those impulse (沖動)control skills. In their study, Vaidya and coauthor Shaun Vecera note researchers generally believe teenagers are impulsive, make bad decisions, and engage in risky behavior because the frontal lobes (額葉) of their brains are not fully developed. But the UI researchers wonder whether something more fundamental is going on with adolescents to cause behaviors independent of higherlevel reasoning. “We want to try to understand how the brains reward system changes from childhood to adulthood,” says Vaidya, who adds the reward character in the human brain is easier than decisionmaking. “We’ve been trying to understand the reward process in adolescence and whether there is more to adolescence behavior than an underdeveloped frontal lobe,” he adds. For their study, the researchers persuaded 40 adolescents, aged 13 to 16, and 40 adults, aged 20 to 35 to participate. In the future, researchers hope to look into the psychological and neurological aspects of their results. 【語篇概述】這是一篇說明文。)以及For parents, that means limiting distractions so teenagers can make better choices. 可知對于父母來說,這意味著要限制孩子們的分心,讓他們做出更好的選擇。 10