什么是概念学习?小学生概念的学习发展趋势特点有哪些?
足背高肿疼痛,皮肤灼红,一周左右成脓破溃,脓水黄白,夹有血水,应首先考虑
A. 附骨疽
B. 流注
C. 足背发
D. 委中毒
E. 流痰
第三篇Youth Emancipation in SpainThe Spanish Government is so worried about the number of young adults still living with their parents that it has decided to help them leave the nest.Around 55 percent of people aged 18-34 in Spain still sleep in their parents’ home, says the latest report from the country’s state-run Institute of Youth.To coax(劝诱) young people from their homes, the Institute started a "Youth Emancipation(解放)" programme this month. The programme offers guidance in finding rooms and jobs.Economists blame young people’s family dependence on the precarious(不稳定的) labour market and increasing housing prices. Housing prices have risen 17 percent a year since 2000.Cultural reasons also contribute to the problem, say sociologists(社会学家). Family ties in south Europe—Italy, Portugal and Greece—are stronger than those in middle and north Europe, said Spanish sociologist Almudena Moreno Minguez in her report "The Late Emancipation of Spanish Youth: Key for Understanding"."In general, young people in Spain firmly believe in the family as the main body around which their private life is organized,’ said Minguez.In Spain—especially in the countryside, it is not uncommon to find entire groups of aunts, uncles, cousins, nieces and nephews(外甥/侄子) all living on the same street. They regularly get together for Sunday dinner.Parents’ tolerance is another factor. Spanish parents accept late-night partying and are wary of setting bedtime rules."A child can arrive home at whatever time he wants. If parents complain he’ll put up a fight and call the father a fascist," said Jose Antonio G6mez Yanez, a sociologist at Carlos III University in Madrid.Mothers’ willingness to do children’s household chores(家务) worsens the problem. Dionisio Masso, a 60-year-old in Madrid, has three children in their 20s. The eldest, 28, has a girlfriend and a job. But life with mum is good."His mum does the wash and cooks for him; in the end, he lives well," Masso said. The phrase "wary of" in paragraph 8 could be best replaced by()
A. tired of
B. afraid of
C. worried about
D. cautious about
第一篇College Night Owls Have Lower GradesCollege students who are morning people tend to get better grades than those who are night owls(晚睡的人 ) ,according to University of North Texas researchers.They had 824 undergraduate(大学本科生的) students complete a health survey that included questions about sleep habits and daytime functioning, and found that students who are morning people had higher grade point averages(GPAs) than those who are night people."The finding that college students who are evening types have lower GPAs is a very important finding, sure to make its way into undergraduate psychology texts in the near future, along with the research showing that memory is improved by sleep," study co-author Daniel J. Taylor said in a prepared statement."Further, these results suggest that it might be possible to improve academic performance by using chronotherapy (时间疗法) to help students retrain their biological clock to become more morning types," Taylor said.The research was expected to be presented Monday at SLEEP, the annual meeting of the Associated Professional (专业的) Sleep Societies, in Baltimore.In other findings expected to be heard at the meeting, University of Colorado researchers found a significant association between insomnia (失眠) and a decline in college students’ academic performance.The study included 64 psychology, nursing and medical students, average age 27.4 years, who were divided into two groups—low GPAs and high GPAs.Among those with low GPAs,69.7 percent had trouble falling asleep,53.I percent experienced leg kicks or twitches (痉挛) at night,65.6 percent reported waking at night and having trouble falling back to sleep, and 72, 7 percent had difficulty concentrating during the day."In college students, the complaint of difficulty concentrating during the day continues to have a considerable impact on their ability to succeed in the classroom," study author Dr. James F. Pagel said in a prepared statement. "This study showed: that disordered sleep has significant harmful effects on a student’s academic performance, including GPAs." The passage indicates that chronotherapy can be used to help people to()
A. forget their troubles
B. improve their image
C. better their social relationships
D. readjust their biological clock